Question # 1

On which principle the induction coil works on.

Choose an answer

Self induction

Ampere's rule

Mutual induction

Gauss's law

Which vector can be used to locate the centre of mass of a collection of particles.

Choose an answer

Null vector

Unit vector

Position vector

Distance vector

In a R-L-C series circuit, when the frequency of A.C. source is high the circuit is.

Choose an answer

R-L Circuit

R-C circuit

L-C circuit

R-L or R-C

The study of atomic structure of crystals by x rays was initiated by.

Choose an answer

Mosely

Young

Huygen

Bragg

Which of the following is not a mode of radioactive decay.

Choose an answer

Positron emission

Electron capture

Fusion reaction

A decay

Alpha particles are used for the treatment of skin of a patient due to.

Choose an answer

Highly ionizing power

Low penetration power

Positively charged particles

Helium nucler

The mass of an helium nucleus is equal to.

Choose an answer

2.0015 u

3.0015 u

4.0015 u

5.0015 u

In an accelerated or non - inertial frame of reference the weight of the body depends upon.

Choose an answer

Acceleration of the frame of reference

Velocity of the body

Momentum of the body

Velocity of the frame of reference

What is zoom lens

Choose an answer

It is a lens having fixed focal length

It is a lens having variable focal length

It is a lens used in radii to telescope

All of the above

A complete amplifier circuit made on a silicon chip and enclosed in a small capsule is

Choose an answer

Inductor

Metal detector

Diode

Operational amplifier

Usually in an operational amplifier the inputs used are of

Choose an answer

Equal voltage and same polarity

Equal voltage and opposite polarity

Different voltage and same polarity

Different voltage and opposite polarity

A charged particles moving in a magnetic field experiences a resultant force.

Choose an answer

Proportional to its K.E.

In the direction of the field

In the direction opposite to its motion

In the direction perpendicular to both the field and its motion

Which of the following is an electrical insulator that can be polarized by an applied electric field.

Choose an answer

Conductor

Condenser

Di electric

Capacitor

In gases, the charge carriers are.

Choose an answer

Atoms

Molecules

Electrons only

Ions and electrons

Which one of the following is diamagnetic

Choose an answer

Liquid oxygen

Air

Water

Copper sulphate

A wire stretches 8 mm under a load of 60 N A second wire of the same material with half the diameter and a quarter of the original length of the first wire, is stretched by the same load What is the extension of the wire.

Choose an answer

1 mm

4 mm

8 mm

16 mm

Which of the following gases has the maximum rms speed at STP.

Choose an answer

O2

H2

N2

CO2

In a transistor which one is very thin.

Choose an answer

Collector

Emitter

Base

Depletion region

An electrical device is rated at 12 W , 2 A How many 1.5 V batteries are needed in the device.

Choose an answer

2

4

6

8

When a force of 16 N acts on a mass of 4 kg for a time of 4 s. What is the rate of change of momentum.

Choose an answer

1 kg m s-2

4 kg m s-2

8 kg m s-2

16 kg m s-2

The strength of photo electric current depends upon.

Choose an answer

Intensity of incident light

Frequency of incident light

Angle of incident light

Distance between anode and cathode

The change in the dimensions of a body produced by the action of the deformation force is known as.

Choose an answer

Strain

Stress

Tensile strain

Tensile stress

Who devised a technique for the measurement of change on an electron in 1909

Choose an answer

Milikan

Joule

Ampere

Ohm

Velocity of sound in air at a given temperature

Choose an answer

Increases with increase in pressure

Is independent of the pressure

Decreases with increases in density

Increases with increase in density

If a gas does 10 J of external work white expanding then the change in internal energy is equal to.

Choose an answer

0 J

10 J

-10 J

100 J

Who proposed the temperature equalization mechanism of a body by thermal radiations with that of its surroundings.

Choose an answer

Pierre Provost

Robert Brown

Albert Einstein

Issac Newton

The viscosity of an ideal fluid is

Choose an answer

Infinity

Unity

Zero

0.5

In a purely inductive circuit, the current

Choose an answer

Lags behind the emf by 90^o

Leads the emf by 90 ^o

Is in phase with emf

May lag or lead the emf

In case of a convex lens the rays closed to and parallel to the principal axis will converge after refraction by the lens at a point.

Choose an answer

Optical centre

Principal focus

Focal plane

Principal axis

Which pair of the following forces has a resultant force of 2 N.

Choose an answer

1 N and 1 N

1 N and 3 N

1 N and 2 N

2 N and 2 N

Which magnetic properties is inherent in all materials.

Choose an answer

Para magnetism

diamagnetism

Ferromagnetism

demagnetism

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