Question # 1

The atmospheric pressure willbe smaller at.

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Peshawar

Murree

Lahore

Islamabad

Change in positionof a body from initial to final point is called

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Velocity

Speed

Displacement

Distance

Work done is maximum when the angle between the force F and the displacemtn d is

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60 ^o

30^o

0^o

90^o

When the slope of a body's displacemnt time graph increase the body is moving with

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Constant velocity

Increasign velocity

Decreasing velocity

All of these

One femtometre is equl to

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10^-15 m

10¹⁵m

10^-9m

10⁹m

Physics is one of the branches of.

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Life science

Social science

Biological sciences

Physical sciecnes

If a body is at rest or moving with uniform rotational velocity, then torqu acting on the boyd will be.

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Zero

Maximum

Minimum

Infinite

Which branch of science plays an important role in engineering.

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Biology

Physics

Chemistry

Life Science

A light year is a unit of.

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Light

Time

Speed

Distance

A ball is droped from the top of a tower, the distance covered by it in the first second is.

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5 m

10 m

50 m

100 m

Which of the following is not renewable eergy soruce.

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Fossil fuels

Hydroelectric energy

Wind energy

Solar energy

The diameter of spherical mirror is called:

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Curvature

Aperture

Sphere

Both a and b

What happens to the intensity of the brightness of the lamps connected in series as more and more lamps are added?

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Increases

Decreases

Remains the same

Can not be predicted

The refractive index of ice is:

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1.00

1.33

1.31

2.42

Power of hair dryer is:

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1000 W

750 W

10 W

75 W

The displacement produced in the spring directly proportional to force is called:

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Hook's law

Boyle's law

Newton's law

both 'b' and 'c'

Which combination forms NAND gate:

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AND & OR

AND & NOT

NOT & OR

NAND & NOT

The centre of spherical mirror is called:

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Focus

Axis

Centre

Pole

the phenomena which is used in applying paints on the surface of different articles is called:

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electroplating

electroscope

electrostatic induction

electrolytes

the insulator between the plates of capacitor is called:

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dielectric

capacitance

resistivity

permittivity

The number of lines of force in a magnetic field depends upon.

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Shape of coil

Sixe of coil

Magnet

Strength of field

The emission of electron from the surface of hot metal is called:

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Ionization

Conduction

Thermionic emission

Convection

If a convex lens is used as a magnifying glass, whcih lens will give higher magnification that has.

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Short size

Long focal length

Large size

Short focal length

When velocity time graph is a straight line parallel to time axis then

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Velocity is zero

Acceleration is constant

Acceleration is zero

Velocity is variable

Angular acceleration is produced by

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Power

Torque

Pressure

Force

If focal length of objective and eye piece is 0.5 m and 10 cm respectively then magnifying power of telescope will be.

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0.5

5

10

20

The value of a time period of allow flying satellite is

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1 year

84 minutes

28 hours

1 day

In reversible process the entropy of system.

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Remain constant

Decrease

Increase

Becomes zero

The distance between two consecutive crest is called.

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Displacement

Amplitude

Wave front

Wavelength

Newton's laws of motion were published in

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1587

1687

1787

1887

When sound waves enter in different medium, the quantity that remains unchanged is.

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Intensity

Speed

Frequency

Wave length

The speed of light was measured correctly by

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Galileo

Michelson

Newton

Maxwell

The equations of angular motion hold only in case when the axis of rotation is

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Moving

Fixed

Both a and b

None of these

The mass of an object will be doubled at speed.

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2.6 x 10⁸ m/s

1.6 x 10⁸m/s

2.6 x 10⁷m/s

3.6 x 10⁷ m/s

The electrostatic force between two charges is 42 N, If we place a dielectric of E_y=2.1 between the charges then the force become equal to.

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42 N

88.2 N

20 N

2 N

In modulation, low frequency signal is known as

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Carrier wave

fluctuated signal

Modulated carrier signal

Modulation signal

The net charge on a capacitor magnitude of charge of charge

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Infinity

2 q

Q/2

Zero

Which one of the following physical quantities change with relativistic speed?

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Length

Time

Mass

All of above

Which of the following basic force is able to provide an attraction between two neutrons:

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Electrostatic and nuclear b

Electrostatic and gravitational

Gravitational and strong nuclear

Only nuclear force

X_L=

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2πfL

1/2πfL

2πfL

fL/2π

The dimensions of magnetic flux are

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M¹L^-2T¹A¹

MLT^-2A^-1

ML²T²A^-1

ML²T^-2A^-1

In order to increase sensitivity of galvanometer the value of C may be

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Increase

Decrease

Neither increase nor decrease

Remain same

The activity of radioactive sample

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Is constant

Increases with time

Decreases linearly with time

Decreases exponentially with time

Energy stored per uint volume inside a solenoid is called as

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energy density

Electric flux

Work

Volume charge density