Question # 1

Linear magnification is equal to the ratio of.

Choose an answer

Size of the object to the size of the image

Size of the image to the size of the object

size of the object focal length

Size of the image focal length

The specific heat of liquid

Choose an answer

Decreases with temperature

Increases with temperature

Remains constant with change in temperature

Increases with pressure

When a force of 4 N acts on a body of mass 2 kg for a time of 2 s, the rate of change of momentum is.

Choose an answer

2 kg ms -1

4 kg ms-1

8 kg m s-1

16 kg m s-1

The pressure of a gas is directly proportions to

Choose an answer

Mean velocity of the molecules

Mean square velocity of the molecules

Root mean square velocity of the molecules

Instantaneous velocity of the molecules

The property of a material to return to it original shape and size on the removal of an external force is called.

Choose an answer

Stress

Strain

Toughness

Elasticity

When the velocity of body is doubled which one is doubled too.

Choose an answer

K.E.

P.E

Momentum

Acceleration

Internal energy of a gas decreased when

Choose an answer

It gains heat

Change in cycle

Change in adiatatic

Change in reversible

Stationary waves are produced when two identical waves are moving on the string.

Choose an answer

Along the same direction

Along the opposite direction

Along the perpendicular direction

Of length 1 m

In case of longitudinal waves the individual particles of the medium move.

Choose an answer

In circles

In ellipses

Parallel to wave propagation

Perpendicular to wave propagation

Which force pushes up a body in fluid

Choose an answer

Thrust

Lift

buoyant

Pressure

Which of the following is a mechanical wave.

Choose an answer

X rays

Radio waves

Sound wave

Light wave

Which of the following is not electromagnetic .

Choose an answer

x-rays

Gama rays

Cathood rays

Infrared rays

Which of the following pair is correct.

Choose an answer

Rutherford - x-rays

Roentgen - Electron

Chadwick - Neutron

J.J. Thomson -Photon

Powder clings to the face due to

Choose an answer

Compression

Capillary action

Cohesion

Adhesion

A body moves with velocity of 2 x 10⁶ m s-1 its relativistic mass becomes

Choose an answer

Zero

Unity

Double of its rest mass

Infinity

One radian is equal to.

Choose an answer

0.1 Gy

0.01 Gy

0.001 Gy

0.0001 gy

Which one of the following is a convenient energy unit to express the energy of sub atomic particles.

Choose an answer

Joule

electron volt

Watt

Curie

The decay process in which an unstable nucleus splits into two fragments of comparable mass is known as.

Choose an answer

Nuclear fission

nuclear fusion

Radioactivity

Carbon dating

The convincing evidence of the wave nature of electrons was provide by.

Choose an answer

Stefan

Rayleigh

Davision and Germer

Balmer

One weber is equal to.

Choose an answer

N A-1

N m-1 A

N mA-1

N m-1 A-1

The temperature scale based upon triple point of water was given by

Choose an answer

Rumford

Carnot

Kelvin

Celsius

Which uranium isotope having the atomic weights as given below is easily fissionable.

Choose an answer

234

235

236

238

Which of the following is an example of an irreversible process.

Choose an answer

Isothermal and adiabatic process

Melting of ice

Work done against friction

Pettier effect

A sonometer or audiometer is a device based on the principle of.

Choose an answer

Resonance

Beats

Overtones

Harmonics

Interference fringe spacing depends on

Choose an answer

The wavelength of light used

The distance screen from the coherent sources

Separation between the sources

All of the above

Natural radioactivity was discovered in.

Choose an answer

1978

1896

1904

1906

Soap cleans the dirty clothes because.

Choose an answer

Its chemical constituents are changed

Itr increases the surface tension of its solution with water

It increases the surface tension of its solution with water

It is less dense than that of water

A metallic rod is continuously heated at its two ends, The heat following through the rod does not depend upon.

Choose an answer

Mass of the upon

Area of cross section of the rod

Temperature gradient between two ends

Time for which heat flow through the rod

A small and a large rain drops are falling thgouth all.

Choose an answer

Large drop falls faster

Both move with same velocity

Small drop falls faster

Small drop does not fall

Linear acceleration of a point moving in a circle of radius 30 cm with angular acceleration of 0.5 rad s-2 is

Choose an answer

1.5 cm s-2

2.5 cm s-2

10 cm s-1

15 cm s-2

A rectangular block has length 6 cm, width 5 cm and height 10 cm Its mass is 150 g The density of the block is

Choose an answer

0.2 g cm-3

0.5 g cm-3

2 g cm-3

5 g cm-3

More Classes

Other Links

PPSC Physics Full Book MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer