Question # 1

Amplitude in SHM is equivalent to ______ in circular motion

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Diameter

Radius

Circumference

None of these

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

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nuclear fission

nuclear fusion

man defect

radioactivity

The focal length of convex lens having magnifying power of 5.55 is:

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5.5 cm

5 cm

4.5 cm

6 cm

A thermistor is a resistor which is:

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Light Sensitive

Heat Sensitive

Sound Sensitive

All of these

None of these

The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:

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1

0.2

2

0.1

Examples of physical quantities are:

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Length

Color

Effect of music

All of these

Equal charges are given to two spheres of different radii. The potential will

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Be more on the smaller sphere

Be more on the bigger sphere

Be equal on both the sphere

Depend on the nature of the material of the sphere

A piece of wire along which charges are made to accelerate is known as

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transmitting antenna

receiving antenna

modulator

nor of these

The path followed by the projectile is known as:

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Cycle

Hyperbola

Trajectory

Route

Which one of the following is an example of resonance

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swing

tuning a radio

microwave oven

all of them

The basic circuit element in D.C. circuit is:

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A capacitor

A resistor

An inductor

Both (A) and (C)

Both (A) and (B)

The value of escape velocity of Earth planet comes out to be:

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11 m/sec

11 km/sec

11 km/hour

11 cm/sec

Position was discovered by Carl Anderson in

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1920

1925

1928

1932

If the values of instantaneous and average velocities are equal, the body is said to be moving with

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uniform acceleration

uniform speed

variable velocity

uniform velocity

A vector of magnitude 5 N is added to a vector of magnitude 8 N while the orientations are changeable. Range of their possible sum will be very from:

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Zero to 3 N

1 N to 13 N

13 N to 3 N

None of these

If the distance between two charges is doubled, the force between them will become

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Double

Half

Three times

One fourth

One third

A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh^-1. its acceleration will be

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7.71 m s^-2

0.5m s^-2

0.15m s^-2

0.092m s^-2

The value of output resistance of OP-AMOP is of the order of

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few ohms

few hundred ohms

several kilo ohms

several mega ohms

The energy acquired by a mass of 1g moving with the speed of light is

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3 x 10⁸J

9 x 10¹³J

3 x 10¹³J

9 x 10¹⁶J

The whole structure obtained by the repetition of unit cells is called:

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Crystal lattice

Amorphous solid

Polymeric solid

Polysterne

None of these

Sadi carnot described an ideal heat engine in

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1820

1840

1860

1880

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

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BACosѲ

Zero

BA

BA sinѲ

None of these

The dimensions of viscosity are:

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M²L^-1T^-2

M^-1L¹T^-1

M^-1L^-1T

ML^-1T^-1

The number of protons inside a nucleus is called

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mass number

atomic weight

atomic number

none of these

From sand, we get a material used for construction with the motion of bodies under the action of forces is called:

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Optics

Mechanics

Thermodynamics

Astrophysics

A ball of mass m moving with uniform speed collides elastically with another stationary ball. The incident ball will lose maximum kinetic energy when mass of the stationary ball is

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m

2 m

4 m

Infinity

The cause of mirage observed in deserts in bright sunlight is due to

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Refraction of light

Reflection of light

Scattering of light

Total internal reflection of light

The value of viscosity of a fluid is dependent on (at constant temperature)

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the fluid itself

the fluid and its container

anything in contact with the fluid

all of the above

A body moving with an acceleration of 5 m/sec²started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

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150 m

250 m

350 m

400 m

Work has a dimension as that of:

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Torque

Angular momentum

Linear momentum

Power

By convention, torques producing clockwise rotation are taken as:

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Positive

Nagative

Zero

None of these

A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when

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Elevator is stationary

Elevator cable breaks and it falls freely towards earth

Elevator accelerates downwards

Elevator accelerates upward

The lasing or active medium in He-Ne laser discharge tube is:

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Nitrogen

Helium

Hydrogen

Neon

None of these

In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be

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2 R

R/4

R/2

R

Whenever a covalent bond breaks, it creates:

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An electron

A hole

An electron-hole pair

A positron

All of these

Velocity of a body changes if

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direction of the body changes

speed of the body changes

neither speed nor direction changes

either speed or direction changes

Choose the set of physical quantities, which have both numerical and directional properties:

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Velocity, mass

Speed, acceleration

acceleration weight

Distance, force

Pressure exerted by a gas is

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Independent of density of the gas

Inversely proportional to the density of the gas

Directly proportional to the square of the density of the gas

Directly proportional to the density of the gas

Which of the following does not have the same units:

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Work

Heat

Kinetic energy

Power

In the text book, the transistor amplifier circuit is a:

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Common emitter circuit

Common collector circuit

Common base circuit

Any of these

None of these

When a stress changes the shape, it is called the

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compressional stress

tensile stress

shear stress

any one of them

A body of mass 5 kg is acted upon by a total change n momentum will be:

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10 NS

100 NS

140 NS

200 NS

If electric and gravitational force on an electron in a uniform electric field will be

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E=mg/q

E=q/mg

E=,g/q

E=qg/m

When a silicon crystal is doped with a pentavalent element, then the atom of the pentavalent element is known as

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acceptor

donor

either of them

none of them

When relatively simple molecules are chemically combined into massive molecules, the reaction is called:

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Fission reaction

Fusion reaction

Polymerization

Any of these

None of these

The emission of radiations take place in elements, having charge number greater than

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109

82

69

52

According to the special theory of relativity, a moving clock

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runs faster

runs slower

neither runs faster nor slower

all of these

Current is measured in

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volts

watt

ohm

ampere

The distance travelled byα-particle in a medium before coming to rest, is called

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range ofγ-particle

range of neutrons

range of particle

none of these

The vertical component of velocity of a projectile during its motion is minimum

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at the time of projection

at the highest point

just before hitting the plane of projection

all of them

The vector is space has:

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One Component

Two Compnents

Three Components

Non of these

The nucleus/nuclei of hydrogen is/are:

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Proton

Deuteron

Triton

All of these

None of these

When a nucleus emits an alpha particles, its charge number decreases by

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3

2

6

5

The emf is measured in:

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Newton

Volt

J/C

Both A and B

Both B and C

If N is the total number of molecules and V is the volume of the container, then the expression for the pressure of gas is

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P=P/V<1/2mv²>

P=2N/V<1/2mv²>

P=2/3N/V<1/2mv²>

P=2/3N/V<mv²>

The half life of radioactive substances depends upon

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amount of substance

energy of substance

state of substance

temperature of substance

A mass spectrograph sort out

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molecules

atoms

elements

isotopes

The closed loop gain of the inverting amplifier is written as

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G = R₂/R₁

G = 1 + R₂/R₁

G = -R₂/R₁

G = 1 - R₂/R₁

Which quantity has the same dimension as that of impulse?

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KE

Power

Momentum

Work

The percentage of available heat energy converted into work by a petrol engine is roughly

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35 %

40 %

35 to 40 %

25 %

With the increase of temperature viscosity

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Increase

Decrease

Remains same

Doubles

Surface density of charge is defined as

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Charge per unit volume

Charge per unit length

Charge per unit area

Charge per unit mass

Swimming is based on the principle of

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Newton's 1st law

Newton's 2nd law

Newton's 3rd law

All

Significant figures in 0.0010 are:

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Four

Three

Two

One

Since the absolute scale is independent of the property of the working substance, hence, can be applied at

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very high temperature

very low temperature

any one of them

none of them

When transistors are used in digital circuits they usually operate in the

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Active region

Breakdown region

Saturation and cutoff regions

Linear region

SI unit of frequency is

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second

hertz

revolution

vibrations/sec

According to Huygen's principle

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light travels in straight line

Light is a transvers wave

Light has dual nature

All points on the primary wave-front are the sources of secondary wavelets

If a vector lies in second quadrant, than B_xand B_yare:

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-,+

+,-

+,+

-,-

In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called

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Quadratic equation

Equation of discontinuity

Equation of continuity

None of the above

Which of the following options correctly states the equation of continuity for an ideal fluid?

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A₁A₂= V₁V₂

A₁/A₂= V₂/V₁

A₁/A₂= V₁/V₂

none of the above

Where the streamlines are very close to each other, the pressure will be

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low

zero

high

all of them

In the above figures, tell which set is graphs shows that a body is moving uniform velocity:

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(i) and (ii)

(ii) and (iii)

(i) and (iii)

(ii) and (iv)

The absolute temperature of the tripple point of water is

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100°C

4°C

373 K

273.16 K

Electromagnetic waves transmit energy equal to

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1/2 mv²

m_oc²

hf/c

hf

The free electrons in metals:

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Are in random motion and their speed depends upon temperature

Move in particular direction

Move with speed of light

Move such that their speed does not depend on their temperature

None of these

The relation V = IR represents

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Ampere law

Faraday's law

Ohm's law

Len's law

Electric lines of force

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Intersect each other

Are always parallel

Are always anti-parallel

Never intersect

None of these

For the normal operation of the transistor, its

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emitter-base and collector base junctions are forward biased

emitter-base junction is reversed biased and collector base junction is forward biased

emitter-base junction is forward biased and collector-base junction is reverse biased

any one of these

Which of the following options states the names of fluids in the order of increasing viscosity?

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mercury, motor oil, methanol

methanol, mercury, motor oil

motor oil, mercury, methanol

methanol, motor oil, mercury

Acceleration in a body is always produced in the direction of :

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Velocity

Weight

Force

Both B and C

During the nuclear changes, the law/s of conservation that hold/s are that of:

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Charge

energy

Momentum

Mass

All of these

The number of "Earth stations" which transmit signals to satellites and receive signals from them are:

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3

24

126

200

The range ofβ-particle in air is greater than that ofα-particle by

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1000 times

100 times

15 times

10 times

Absolute motion cannot be detected

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in its own frame of references

in a different frame of references

both in its frame and different frame of references

none of these

When two spherical conducting balls at different potentials are joined by metallic wire, the current starts:

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Decreasing from zero to maximum

Increasing from zero to maximum

Decreasing from maximum to zero

Increasing from maximum to zero

Both (A) and (D)

Rate of change of momentum is called

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Impulse

Force

Torque

Momentum

During the whole carnot cycle

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Thermal equilibrium is maintained

mechanical equilibrium is maintained

both the thermal and mechanical equilibriumis maintained

both the thermal and mechanical equilibrium is not maintained

The special theory of relativity is based on:

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Four postulates

Three postulates

Two postulates

One postulate

None of these

When a body moves to and fro motion, this type of motion is called

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translatory motion

circular motion

oscillatory motion

all of them

The pattern of crystalline solid is:

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One dimesional

Two dimensional

Three dimensional

Either (A) or (B)

None of these

Physics is one of the branches of:

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Social sciences

Physical sciences

Biological sciences

Abstract art

A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of

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3 s

5 s

7 s

9 s

The value of E₀in coulomb's law is:

Choose an answer

9 x 10⁹Nm²C^-2

8.85 x 10^-12C²N^-1m^-2

8.85 x 10^-12Nm²C^-2

9 x 10⁹C²N^-1m^-2

The acceleration of body executing SHM is directly proportional to

Choose an answer

Applied force

Amplitude

Displacement

Frictional force

NmA^-1is commonly called:

Choose an answer

Weber

Apmere

Guass

Coulomb

None of these

The phase determines the

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displacement

amplitude

frequency

state of motion of vibrating body

In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is

Choose an answer

Mg

1/2 Mg

Zero

2 Mg

The bob of a simple pendulum is suspended by

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string

heavy inextensible string

light extensible string

light inextensible string

An electric charge at rest is

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Only an electric field

Only a magnetic field

Both electric and magnetic fields

None of the above

The photoelectric effect, the maximum energy of photoelectrons depends on the

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particular metal surface

frequency of incident light

both of them

none of them

Choose an answer

2 b

2 a

2 ab

a + b

The equation of the circle witch centre (-3, 5) and radius 7 is

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(x-3)²+ (y+5)²= 7²

(x-3)²+ (y-5)²= 7²

(x+3)²+ (y+5)²= 7²

(x+3)²+ (y-5)²= 7²

Order (or sense) of an inequality is changed by multiplying or dividing its each side by a:

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Zero

one

negative constant

Non negative constant

If n is any positive integer then n! > n²for

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If f(x) = x²then f(2) is

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-2

2

4

-4

Choose an answer

2²- n - 1

1 - 2^-n

n + 2^-n-1

2ⁿ- 1

A vector of magnitude zero is called

Choose an answer

Position vector

Null vector

Free vector

None of these

If u = 2ai + i - k and v = i +ai + 4k are perpendicular then a =

Choose an answer

4

1/2

3

4/3

The A.M. of two numbers is 34 and G.M. is 16, the numbers are

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2 and 64

64 and 3

64 and 4

None of these

A fixed point which lies on the axis of the cone is called its:

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axis

apex

plane

diameter

(1 - x)³= ______

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1 + 3x + 3x²+ x³

1 + x + x²+ x³

1 - x + x²- x³

1 - 3x + 3x²- x³

The set of whole numbers is subset of

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The set on integers

The set of natural numbers

{1, 3, 5, 7, ....}

The set of prime numbers

Additive inverse of - a - b is

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a

-a + b

a - b

a + b

∫Sec² (ax + b) dx is equal to:

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tan² (ax + b)

1/a tan² (ax + b)

1/atan (ax +b)

tan (ax + b)

Choose an answer

x^-2+ c

not possible

Period of Tangent function is

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0°

-π

π

2π

Choose an answer

2x

3x²

1

0

The real numbers which satisfy an inequality form its

Choose an answer

solution

coefficient

domain

range

The period of cos(7x-5) is

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π/7

7π/2

π/2

2π/7

The set { {a,b} } is

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Infinite set

Singleton set

Two points set

Empty set

The magnitude of vector a 2i-7j is

Choose an answer

√23

√43

3

√53

Choose an answer

0

1

Choose an answer

0

1

The sixth term of the sequence 1,3,12,60....is

Choose an answer

1500

72

2160

2520

r + 3 >5 then which is true

Choose an answer

r + 2 > 4

r + 2 < 4

r + 2 = 4

None

Choose an answer

ab > 0 and a > 0 then

Choose an answer

a > b

a < b

a = b

None

Choose an answer

A

B

A'

None of these

If distance of (a,b) from x-axis is 2 then

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a = 2

b = 2

a = b

b = 4

If one end of the diameter of the circle 2x²+ 2y²-8x - 4y = 2 = 0 is (2 ,3), the other end is:

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(2,1)

(-2,1)

(2,-1)

(1,-1)

Choose an answer

None of these

Choose an answer

0

20

90

80

Choose an answer

1

0

Choose an answer

0

1

Choose an answer

2

0

The multiplicative inverse of 4 is

Choose an answer

-4

-1/4

1/4

1

Choose an answer

The value of k (k > 0) for which the equation x²+ kx + 64 = 0 and x²- 8x + k = 0 both will have real roots is

Choose an answer

8

-16

-64

16

If the sum of co-efficient in the expansion of (a+b)ⁿis 4096, then the greatest co-efficient in the expansion is

Choose an answer

1594

792

924

2924

If a particle moves according to the law s = t³- t², then its velocity at time t = 1.5 is

Choose an answer

9/2

15/4

5

None

202.04 is an example of

Choose an answer

Recurring decimals

Non-recurring decimals

Terminating decimals

None of these

Choose an answer

P(A) + P(B)

P(A) - P(B)

P(A) . P(B)

P(A) / P(B)

The number of real tangents that can be drawn to the ellipse 3x²+ 5y²= 32 passing thro. (3, 5) is

Choose an answer

0

1

2

Infinite

If 5,7 and 9 are A.Ms between a and b, then a and b is equal to

Choose an answer

2 and 12

1 and 10

3 and 11

-7 and 2

If n∈Z+ then(a+x)n is a/an

Choose an answer

Finite series

Convergent series

Infinite series

Divergent series

Choose an answer

2

-1

8

not defined

A quadratic equation has two

Choose an answer

roots

degree

variables

constants

sin (α +β)=

Choose an answer

sinαcosβ- cosαsinβ

sinαcosα- cosβsinβ

sinαcosα+ cosβsinβ

Choose an answer

0

1

-1

None

Choose an answer

110

220

1320

None of these

Choose an answer

Two cards are drawn at random from a well shuffled pack of cards. The probability that at least one of them is a face card is

Choose an answer

3 / 17

5 / 17

7 / 17

9 / 17

The set {-1,1} is

Choose an answer

Group under the multiplication

Group under addition

Does not form a group

Contains no identity element

Choose an answer

quadratic function

constant function

trigonometric function

linear function

3.5+5.4=5.4+3.5 =8.9 this property of addition is called

Choose an answer

additive identity

assoclative property

commulative property

closure property

Choose an answer

There are two middle terms in the expansion of (a+x)n if n is

Choose an answer

Even +ve integer

+ve integer

Odd +ve integer

All

Choose an answer

π

π / 2

π / 3

π / 4

The point R dividing internally the line joining the points P(x₁, y₁) and Q(x₂, y₂) in the ratio K₁: K₂has the coordinates

Choose an answer

The 7th term of (3⁸ + 6⁴x)^11/4 is

Choose an answer

-19217/3 x⁶

189/2 6⁴x

2227/12 x³

-19712/3 x⁶

Choose an answer

3

2

8

0

A stationary point x is a relative exterma of y= f(x) is

Choose an answer

f′′ (x) > 0

f′′ (x) < 0

f′′ (x) ≠ 0

f′′(x) = 0

The modulus of 12-5i is:

Choose an answer

7

13

√7

119

Choose an answer

16

256

64

1024

Choose an answer

(2.02)4 s equal to

Choose an answer

16

16.6496

17

18

The point ________ is in the solution of the inequality 4x - 3y < 2

Choose an answer

(0,1)

(2,1)

(2,2)

(3,3)

The roots of the equation will be irrational if b²- 4ac is

Choose an answer

Positive and perfect square

Positive but not a perfect square

Negative

Zero

Choose an answer

a f(x) + c

f(x) + a

Choose an answer

11

61

1

If a = 2i +2j, b= 3i -j and c=4i +5j, the 3b -a-2c =

Choose an answer

-i -15j

i-15j

i-3j

None of these

In triangle ABC, in which b=95, c=34, a =52^𝜊then the value of a=

Choose an answer

18 cm

18.027 cm

20.7 cm

19 cm

The point which divides the line segment joining the points (a, b) and (c, d) in the ratio 2 : 3 internally is

Choose an answer

none of these

For a positive integer n

Choose an answer

n! = n(n + 1)

n! = n(n+1)!

n! = n(n - 1 )

n! = n(n - 1)!

If|a| =|b| = |a+b|=1, then|a-b| is equal to:

Choose an answer

1

√3

√2

7

Choose an answer

Distance between A(3, 8), B(5, 6) is

Choose an answer

The central angle of an arc of a circle whose length is equal to the radius of the circle is called the

Choose an answer

degree

radian

minute

second

Choose an answer

0

1

2/9,5/7∈ R,(2│9)(5│7)=10/63∈R this property is called

Choose an answer

Associative property

Identity property

Commutative property

Closure property w.r.t multiplication

Choose an answer

The approximate increase in the area of a circular disc if its diameter increased form 44cm to 44.4cm is

Choose an answer

0.4cm

8.8πcm

17.6 πcm

35.2πcm

The area of a sector with central angle of 0.5 radians in a circular region whose radius is 2m is

Choose an answer

I

14 I

0

None of these

(ABC)' =

Choose an answer

CBA'

CBA

C' B' A'

None of these

Choose an answer

15

9

7

8

Choose an answer

The5thand 13th terms of an A.P are 5 and-3 respectively The first term of the A.P is

Choose an answer

1

-15

9

2

Choose an answer

Proper fraction

Improper fraction

Rational fraction

None of these

Choose an answer

The law of consines

The law of sines

The law of tangents

None of these

The function {f(x,y)|y = ax2 +bx +c} is

Choose an answer

One-one function

Constant function

Onto function

Quadratic function

In R the left cancellation property w.r.t addition is

Choose an answer

[0, 0, 0]

[1, 0, 0]

[0, 1, 0]

[0, 0, 1]

A number A is said to be the A.M between the two numbers a and b if a, A, b are in

Choose an answer

A.M

A.P

G.P

G.M

Which of the following has the same value as i113

Choose an answer

i

-1

-i

1