Question # 1

A particle of mass 0.5 g moving along x-axis is located of x₁= 15 m at t₁= 5s and x₂= 33 m at t₂= 13s its average velocity is

Choose an answer

6 m s^-1

2.45 m s^-1

2.25 m s^-1

4.45 m s^-1

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

Choose an answer

109

82

69

52

Change in momentum is one second called.

Choose an answer

Impulse

Force

Energy

Work

Flux through a closed surface of any shape and flux through the surface of a sphere drawn around a charge are:

Choose an answer

Different

Same

Such that it is greater in the first case

Such that it is greater in the second case

None of these

Electrolysis is the study of conduction of electricity through:

Choose an answer

Solids

Liquids

Gases

Plasma

Escape velocity from surface of Moon as compared to that from Earth surface is:

Choose an answer

Greater

Smaller

Equal

None of thes

Which quantity has different dimension:

Choose an answer

Work

Pressure

Energy

Torque

The motional e.m.f depends upon the

Choose an answer

Length of a conductor

Strength of a magnet

Speed of the conductor

All of the above

The total energy of spring mass system is

Choose an answer

zero

changing with time

constant

none of them

If 250V is the RMS value of alternative voltage, then its peak value V_owill be:

Choose an answer

353.5V

250V

175V

zero

400V

Balmer series lies in that region of electromagnetic wave spectrum which is called:

Choose an answer

Visible region

Invisible region

Infra-red region

ultraviolet region

None of these

The information from far side of the universe are gathered by

Choose an answer

Radio telescope

Microscope

Telescope

Spectro scpe

The change of order of vectors in a dot product of two vectors:

Choose an answer

Changes its value

Doesn't change it's value

Changes the direction product quantity

None of these

Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then

Choose an answer

R₁= 2R₂

R₂= 2R₁

R₂=4R₁

R₁= 4R₂

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

Choose an answer

Perpendicular to each other

Parallel to each other

Inclined to each other at an angle of 45°

Anitparallel to each other

The velocity of light in vacuum can be changed by changing

Choose an answer

Frequency

Amplitude

Wavelength

None of these

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Choose an answer

F = B²

F = 0

F = B

F = B/2

The time taken to complete one vibration is called:

Choose an answer

Frequency

Amplitude

Time

Time period

The internal pressure of the blood is

Choose an answer

less than the external atmospheric pressure

greater than the external atmospheric pressure

equal to the external atmosphericpressure

none of them

The charge per unit time through any cross-section of a conductor is called

Choose an answer

capacitance

electric power

current

potential difference

The concept of entropy was introduced into the study of thermodynamics in

Choose an answer

1856

1865

1656

1685

The wave motion set up in any medium depends upon:

Choose an answer

Elasticity

Inertia

Density

All of these

The phase angle of a series RLC circuit at resonance is

Choose an answer

180°

90°

0°

None of the these

Which one of the following phenomenon cannot be explained on the bases of Huygen's theory

Choose an answer

Refraction

Reflection

Diffraction

Formation of spectrum

Which one is related to angular motion:

Choose an answer

Moment of a force

Moment of inertia

Moment of momentum

None of these

Truth table of logic function:

Choose an answer

Summarizes its output values

Tabulates all its input conditions only

Display all its input/output possibilites

Is not based on logic algebra

None of these

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

Choose an answer

11/3 A

3 A

3/11 A

6

An induced current can be produced by

Choose an answer

Constant magnetic field

Changing magnetic field

Varying electric field

Constant electric field

None of these

A dirty carpet is to be cleaned by heating. This is in according with______law of motion.

Choose an answer

First

Second

Third

None of these

The L-C parallel circuit the capacitor draws a

Choose an answer

leading current

lagging current

main current

none of these

The rate of decay of radioactive substance

Choose an answer

is constant

decrease exponentially with time

varies inversely as time

decreases linearly with time

The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of

Choose an answer

negative charges

positive charges

protons

electrons

Huygen's principles states that:

Choose an answer

Light travels in straigth line

Light has dual nature

Either of these

None of these

Conversion of A.C. into D.C. is called:

Choose an answer

Reftification

Amplification

Electric induction

Magnetic induction

None of these

Swimming becomes possible because of______law of motion:

Choose an answer

First

Second

Third

None of these

There is present in paraffin a large amount of:

Choose an answer

Nitrogen

Hydrogen

Carbon

Baryllium

Lithium

When the bob of simple pendulum is at mean position, its K.E will be

Choose an answer

maximum

minimum

zero

all of them

If the formula PV = nRT, n denotes:

Choose an answer

Number of molecules per unit volume

Number of moles

Number of molecules

None of these

To and from motion of a body about its mean position is known as:

Choose an answer

Translatory motion

Vibratory motion

Rotatory motion

None of these

The fluid which is incompressible and non viscous is called

Choose an answer

Ideal fluid

Non-ideal fluid

Prefect fluid

All

Conventionally the angular velocity is directed to an angle of:

Choose an answer

90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m²The force on the wire is

Choose an answer

5N

4N

1.5N

6N

In case of streamed lined flow of liquid, the loss of energy is

Choose an answer

Maximum

Minimum

Infinite

equal to what is in turbulent flow

At the top of the trajectory of a projectile the acceleration is

Choose an answer

The maximum

The minimum

Zero

g

Earth is considered to be

Choose an answer

a non-inertial frame

an inertial frame

an accelerated frame

none of the above

A weakly damped system has fairly

Choose an answer

sharp resonance curve

flat resonance curve

both of them

none of them

The relation V = IR represents

Choose an answer

Ampere law

Faraday's law

Ohm's law

Len's law

In Bernoulli's theorem the relation between velocity and pressure is

Choose an answer

Inverse

Direct

None of the above

Both a and b

The speed of randomly moving electrons depends upon

Choose an answer

pressure

volume

temperature

mass

Position was discovered by Carl Anderson in

Choose an answer

1920

1925

1928

1932

The torque per unit twist of coil is called

Choose an answer

proportionality constant

gravitational constant

boltzman constant

coupling constant

An electron is accelerated through a potential difference of 50v. its de-Brogile wavelength is

Choose an answer

1.66 x 10^-29m

1.74 x 10^-10cm

17.4 x 10^-6m

1.74 x 10^-10m

A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called

Choose an answer

reversible process

irreversible process

any one of them

none of them

Work done on a body by gravity in lifting it up to certain height is

Choose an answer

Maximum

Minimum

Zero

Negative

The device which can convert heat energy into electrical energy is called:

Choose an answer

Thermistor

Thermometer

Thermostat

Thermocouple

Both (C) and (D)

In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as

Choose an answer

plastic limit

plastic deformation

proportional limit

elastic behaviour

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Choose an answer

Much more

Very small

No amount at all

None of these

A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is

Choose an answer

2100 m/s²

1400 m/s²

700 m/s²

400 m/s²

Wave length of that color as compared to that of violet color is:

Choose an answer

Smaller

Longer

Equal

None of these

The minimum wavelength of X-rays produced of 1KV potential difference is applied across the anode and cathode of the tube is

Choose an answer

1.24 x 10^-10m

7.92 x 10^-20m

2.78 x 10^-14m

3.88 x 10^-11m

The curie temperature of iron is about

Choose an answer

250°C

500°C

750°C

1000°C

A non-inertial frame of reference is one, in which

Choose an answer

law of inertial is valid

all laws of physics are the same in all frames

a>0 or a<0

a=0

The amplifier which us used to perform mathematical operations electronically is known as

Choose an answer

calculator

OP-AMP

computer

any one of them

The SI unit of strain is

Choose an answer

N

Dynes

Pascal

Dimensionless

A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after

Choose an answer

10 s

20 s

5 s

40 s

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

Choose an answer

7.71 m s^-2

0.5m s^-2

0.15m s^-2

0.092m s^-2

When a conductor moved with its length parallel to the lines of magnetic fled:

Choose an answer

An emf is induced across its ends

Emf induced is similar to that of a battery

Emf passes through the conductor

Both A and B

None of these

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

Choose an answer

maximum

zero

half of the maximum value

one third of the maximum value

The expression of Hook's law is

Choose an answer

F=ma

F=kx

F= -kx

-kx=ma

The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be

Choose an answer

2.0 x 10^-5/°C

4.0x10^-5/°C

6.0x10^-5/°C

2.33x10^-5/°C

Work done is independent of path followed in _______

Choose an answer

Gravitational field

Magnetic field

Electric field

All of these

A rotating wheel accelerates up to the value of 0.75 rev/sec²after 2 seconds of its start. Its angular velocity becomes:

Choose an answer

9.42 rad/sec

2.6 rev/sec

1.5 rev/sec

Both A and C

When either L or C is increased, the resonant frequency of the RLC series circuit

Choose an answer

Increases

Decreases

Remains the same

Becomes zero

Which of the following is not an example of adiabatic process

Choose an answer

the rapid escape of air from a burst type

the rapid expansion and compression of air through which a sound wave is passing

cloud formation in the atmosphere

none of them

The loudness and pitch of a sound note depends on

Choose an answer

Intensity and velocity

Frequency and velocity

Intensity and frequency

Frequency and number of harmonic

Zirconia is classified as:

Choose an answer

Ceramic solid

Ionic compound

Metal

Either (A) or (B)

Either (B) or (C)

When there is no relative motion between the magnet and coil, the galvanometer indicates:

Choose an answer

No current in circuit

An increasing current

A decreasing current

Either B or C

G.P. Thomson observer experimentally that electrons and neutrons possess

Choose an answer

particle-like properties

wave-like properties

neither particle nor wave like properties

none of these

At resonance, the phase angle for RLC series resonance circuit equals

Choose an answer

0°

90°

180°

270°

Photoelectric effect takes place with a photon of:

Choose an answer

Very high energy

Very low energy

Low energy

High energy

None of these

At low speeds, the drag force is

Choose an answer

proportional to speed

inversely proportional to speed

not simply proportional to speed

none of them

Distance to nearest galaxy from earth is

Choose an answer

10¹⁰m

10¹⁵m

10⁴⁰m

10³⁰m

Φ set is the _______ of all sets

Choose an answer

Subset

Union

Universal

Intersection

The vertex of the standard position angles lies on

Choose an answer

(0,0)

(0,1)

(1,0)

(1,1)

Choose an answer

If f(x) = x²then f(-2) is

Choose an answer

-2

2

4

-4

Two quadratic equation in which xy term is missing and the coefficients of x²and y²are equal, give a linear equation by ______

Choose an answer

Addition

Subtraction

Multiplication

Division

202.04 is an example of

Choose an answer

Recurring decimals

Non-recurring decimals

Terminating decimals

None of these

There are 16 point in a plane, in which 6 are collinear. how many lines can be drawn by joining these points?

Choose an answer

10

66

71

106

Choose an answer

1

-1

If a > 0 they parabola y2 =-4ax lies in

Choose an answer

I and iv quadrant

I quadrant

II and III quadrant

All are incorrect

If A = |aij| is (m x n) matrix then transpose of A is of the order

Choose an answer

m x m

m x n

n x n

n x m

tan(π-θ)=_____;

Choose an answer

tanθ

cotθ

-tanθ

-cotθ

Choose an answer

[0, 0, 0]

[1, 0, 0]

[0, 1, 0]

[0, 0, 1]

Choose an answer

b = c

a = c

b = 0

Choose an answer

Does not exist because f is unbounded

Is not attained even though f is bounded

Is equal to 1

Is equal to -1

Domain of y = scs x is

Choose an answer

All real numbers except π/2 + n*π

R

All negative integers

None of these

Choose an answer

Each complex cube root of unity is square of

Choose an answer

itself

1

-1

the other

The period of the trigonometric function y = sin x cos x is

Choose an answer

2π

π

4π

π / 2

The square roots of negative numbers is called

Choose an answer

Real no

Complex no

Positive no

Negative no

Name the property used in 4 + 9 = 9 + 4

Choose an answer

Associative property of addition

Commutative property of addition

Distributive property

Additive identity

Decimal part of irrational number is

Choose an answer

Terminating

Repeating only

Neither repeating nor terminating

Repeating and terminating

Choose an answer

Always negative

Zero

Always positive

Infinity

The equation of line passing through intersection of line x = 0 and y = 0 and the point (2,2) is

Choose an answer

y = x

y = x - 1

y = x + 1

Choose an answer

56

7

8

8/7

Choose an answer

150°= ______

Choose an answer

The sides of a right angled triangle are in A.P The ratio of sides is

Choose an answer

1:2:3

3:4:5

2:3:4

5:8:3

The probability of getting a number between 1 and 100 which is divisible by 1 and itself if only is

Choose an answer

1 / 4

1 / 2

3 / 4

25 / 98

If f (x) = 2x+1 then fof (x) = _______;

Choose an answer

4x+3

2x +3

4x +1

None of these

Choose an answer

The formula an = arn-1represents

Choose an answer

nth term of G.P

Sum of the first n terms

G.M between a and b

None of these

If n is odd then the middle terms in the expansion of (a + x)ⁿare

Choose an answer

If (a, b) is the mid-point of a chord passing thro' the vertex of the parabola y²= 4x, then

Choose an answer

a = 2b

2a = b

a²= 2b

2a = b²

Another name of quadratic equation is

Choose an answer

Polynomial

2nd degree polynomial

Linear equation

simaltaneous equations

The range of y = sin x is ______

Choose an answer

[1, -1]

[-1, 1]

[0, -1]

[-∞+∞]

Domain of 3 sin x is ______

Choose an answer

[-3, 3]

R

Positive real numbers

None of these

Choose an answer

-a -b -c

1

0

-1

The number of tangents to the circle x2+ y2 -8x -6y +9 =0 which pass through the point (3,-2) is

Choose an answer

2

1

0

None of these

Choose an answer

For any integer k, wⁿ= ______ when n = 3k

Choose an answer

1

2

0

-4

The distance of point P(x,y) from focus in a parabola

y² =4ax, is:

Choose an answer

2a

a

x + a

x-a

Range of cosθis

Choose an answer

The minimum value of the quadratic function f(x) = 5 x 2-11,is

Choose an answer

7

-7

6

-11

If n is any positive integer ,t hen 2+4+6+......+2 n=

Choose an answer

2ⁿ-1

2ⁿ+1

n²+1

n(n+1)

Two circles x2 +y2 +8x -9= 0 and x2+y2+6y +k =0 touchinternallyif the value of k is

Choose an answer

k = 9

k = ±9

k=-9

k=11

6! = ______

Choose an answer

360

720

6.5.4

None of these

Choose an answer

0

1

2

3

The area of the circle centred at (1,2) and passing through (4,6) is

Choose an answer

30 πsq.units

5π sq.units

15π sq.units

25π sq.units

Period of cos x is _____

Choose an answer

The third term of the sequence a_n= (-1)^n-1(n-7) is ______

Choose an answer

8

4

-4

8

The radius of the circle x²+ y² - 6 x + 4 y +13 = 0 , is

Choose an answer

1

2

0

None of these

If f(x) = x²-x then f(0) is

Choose an answer

0

1

2

3

Choose an answer

-1

0

1

None of these

The roots of (b-c)x2+(c-a) x+a-b=0 are equal if

Choose an answer

2b = a+c

2a = b+c

2c = a+b

a + b + c =0

The differential equations of all conis whose axes coincide with the co-ordinate axis is

Choose an answer

The standard parabolic form of the equation f(x) = x² +4 x +1 is

Choose an answer

x(x+4)+1

(x+2)²-3

(x+4)³ + 9

x(x-2)²+1

Choose an answer

2s²

2s³

s³

3s³

A square matrix A = [aij] is upper triangular when

Choose an answer

cij = 0

bij = 0

aij = 0 for all i > j

dij = 0

If z₁ = (a,b), z₂=(c,d), then z₁ z₂ = -------------------

Choose an answer

(ac,bd)

(ac+bd, ad-bc)

(ac-bd , ad+bc)

(ac-bd , ad-bc)

The equation (cos p - 1)x²+ x (cos p) + sin p = 0 in the variable x, has real roots, then p can take any value in the interval

Choose an answer

(0, 2π)

(-π, -0)

(0,π)

None of these

Period of cosec x is ______

Choose an answer

sec x tan x

-cosec x cot x

sec²x

-sin x

The negative square root of 9 can be written as:

Choose an answer

-√9

√9

√18

-√18

If l, m, n are the d.c.'s of a line, then

Choose an answer

l2+ m2+ n2= 0

l2+ m2+ n2= 1

l + m + n = 1

l = m = n = 1

The vertex of the graph of the quadratic function f(x) =-x2+6x+1,is

Choose an answer

(-3,10)

(-3,-10)

(3,10)

(3,-10)

The position vector of a point (x, y) in xy plane is

Choose an answer

none of these

Choose an answer

xa^x-1

a^x

x in a

a^xIn a

The point which is closet to the focus of a parabola is:

Choose an answer

vertex

Chord

Focus

Directix

x²+ x - 5 = 0 is

Choose an answer

A polynomial

An inequality

An identity

None

Choose an answer

The behavior of trigonometric function is called

Choose an answer

Continuity

Discontinuity

Periodicity

Smoothness

Choose an answer

4

6

8

10

If 4 sin²θ=1, then values ofθare

Choose an answer

0

1

-1

none of these

The difference of two consecutive terms of an A.P. is called ______

Choose an answer

General term

Common ratio

Common difference

None of these

Choose an answer

x

y

Choose an answer

a sec(ax + b) + c

- a sec(ax + b) + c