Question # 1

If D1 and D2 are the powers of two lenses placed in contact then the power of the combination will be.

Choose an answer

D1+D2

D1-D2

D1/D2

D1 x D2

The emission of electrons from a metal surface when exposed to light of suitable frequency is called.

Choose an answer

Pair production

Compton effect

Photo electric effect

Zeeman effect

x-rays can cause fluorescence in materials such as

Choose an answer

Cadmium

Zinc sulphide

Palatinocyanide

All of these

What is the traditional name for a capacitor

Choose an answer

Choke

Condenser

Transformer

Inductor

The energy transmitted per second though unit are held perpendicular to the direction of propagation of the wave is called.

Choose an answer

Intensity of sound

Pitch of sound

Loudness of sound

Quality of sound

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

At room temperature the p.d. between the two sides of depletion region for germanium is of the order of.

Choose an answer

0.3 V

0.5 V

0.7 V

0.9 V

The rate of change of momentum of a body falling under gravity is equal to its.

Choose an answer

P.E.

K.E

Weight

Density

Which of the following is invariant under Galilean transformation.

Choose an answer

Velocity

Impulse

Momentum

Distance

A pure capacitor is connected in an AC circuit The power factor of the circuit will be.

Choose an answer

Unity

Infinity

0.5

Zero

The phenomenon in which a charging current in one coil induces an emf in another coil is called.

Choose an answer

Induced current

Induced emf

Self induction

Mutual induction

It is deduced that a piece of metal is already a magnet if

Choose an answer

A copper wire is attracted to it

A copper wire is repelled by it

One end of a compass is repelled by it

Both ends of a compass needle are attracted to it.

Which kind of motion is exhibited by molecules of monoatomic gas.

Choose an answer

Rotatory

Vibratory

Translatory

Random

The separation between the plates of a parallel plate capacitor with original capacitance C is doubled its present capacitance will be.

Choose an answer

1/4 C

1/2 C

2C

4 C

A girl standing 150 m in front of tall building fires a pistol A boy standing 350 m behind her hears two bangs 1 s apart from this information what is the speed of sound in air.

Choose an answer

150 m s-1

300 m s-1

280 m s-1

330 m s-1

Fringe spacing in double slit experiment can be increased by decreasing.

Choose an answer

Wavelength of light

Width of slits

Slite separation

Distance between the slits and screen

In electromagnetic spectrum X-rays are next to.

Choose an answer

Water waves

Radio waves

ultraviolet waves

Infrared waves

If the earth stopped rotating the weight of objects at either pole would.

Choose an answer

Be grater

Be less

Vary with altitude

Be the same before

Which thermodynamic law state taht the entropy of a perfect system approaches zero.

Choose an answer

Zeroth law of thermodynamics

First law of thermodynamics

Second law of thermodynamics

Third law of thermodynamics

Electricity is transmitted at high voltage rather than at low voltage because.

Choose an answer

It is generated at high voltage

It is safer

It requires less insulation

It wastes less energy

Power of lens is measured in

Choose an answer

cm

Metres

cm-1

Dioptres

Which one the following is not a component of a Bipolar junction Transistor

Choose an answer

Base

Emitter

Collector

Grid

When net force acting on a system is zero which of the following will be constant.

Choose an answer

Force

Linear momentum

Angular momentum

Linear impulse

Which technique uses underwater sound propagation to detect and locate submerged objects.

Choose an answer

RADAR

LIDAR

SONAR

LASER

Which of the following is a thermodynamic temperature scale.

Choose an answer

Celsius scale

Fahrenheit scale

Kelvin scale

Rankine scale

The half life of a radioactive substance as compared to its mean lif eis.

Choose an answer

30%

50%

70%

90%

A young man wearing glasses does not require bifocals because he

Choose an answer

Is farsighted

Has the ability to accommodate

Is short signed

Does not suffer from coma

Some concept of static electricity were introduced by.

Choose an answer

Chinese

Plato

Thales

Archimedes

The device in the circuit that consume electrical energy are known as.

Choose an answer

Resistors

Capacitors

Fuses

Load

Chromatic aberration can be removed by using.

Choose an answer

Convex lens

Two convex lenses

Concave lens

Combination of a convex lens and a concave lens

What is the cause of mirage in desert areas.

Choose an answer

Refractive index of atmosphere increases with height

Refractive index of atmosphere decreases with height

Refractive index of atmosphere remains constant

Scattering

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