Question # 1

The internal energy of an isolated system

Choose an answer

Is zero

Keeps on changing

Remains constant

Cannot be judged

The product of mass and specific heat of a substance is called.

Choose an answer

Latent heat

Water equivalent

Atomic heat

Heat capacity

The bunding energy per nucleon for iron is.

Choose an answer

zero

Maximum

Negative

Minimum

The X-rays coming from a X-rays tube

Choose an answer

Is monochromatic

Has all wavelengths smaller than a certain maximum wavelength

Has all wavelengths greater than a certain maximum wavelength

has all wavelengths minimum than a certain maximum wavelength

In a Geiger Marsden experiment why do the great majority of the Alpha particles pass straight through the metal foil.

Choose an answer

Atomic nuclei may contain neutrons

Atoms are electrically neutral

Atoms are largely empty space

Atoms have positively charged nuclei

The index of refraction depends on

Choose an answer

the focal length

The speed of light

The image distance

The object distance

The locus of all points in the same state of vibrations are known as.

Choose an answer

half period zone

A wavefront

A half wave zone

A full wave zone

Newton's first law of motion provides the definition of.

Choose an answer

Distance

Force

Vector

Acceleration

When a posirtron is emitted it causes.

Choose an answer

Mass number to increase by one

mass number to decrease by one

Atomic number to decrease by one

Atomic number to increase by one

the ratio of applied stress to volumetric strain is called.

Choose an answer

shear modulus

Bulk modulus

Young's modulus

elastic limit

The combined effect of resistance and reactance's in A.C. circuit is called.

Choose an answer

Resistance

Conductance

Choke

Impedance

When did max planck suggest that energy is released or absorbed in discrete packets.

Choose an answer

1899

1900

1905

1911

The mass of an alpha particle is.

Choose an answer

2 u

4 u

6 u

8 u

Which of the following statemtents is worng.

Choose an answer

Charge is quantized

Charge is conserved

There is not field near an isolated charge at rest

A moving charge produces both electric and magnetic field.

What information is given by the tangent to a field that point of electric field.

Choose an answer

Magnitude

Direction

Proper unit

Dimensions

When current in an inductor is increasing

Choose an answer

energy is lost

Energy is being stored in the magnetic field of the inductor

Energy is being drained from the magnetic field of the inductor

Eddy current is produced

A 4 kJ mass of copper of specific heat capacity of 400 J kg-1k-1 is heated for 160 s by a heater of power 200 W what is the rise in temperature.

Choose an answer

10 K

16 K

100 K

160 K

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

Electric field lines

Choose an answer

Start from a negative charge and terminal ate on a positive charge

Never cross each other

Always cross each other

Leaving a positive charge are not proportional to the maginitud of charge

Rainbows and mirage are formed by

Choose an answer

Reflection only

Refraction only

dispersion only

A combination of refraction, total internal refraction and dispersion

In alternating current circuits the quantity which plays the same role as resistance in direct current circuits is called.

Choose an answer

Reactance

Admittance

Conductance

Impedance

A body is said to be in translations equilibrium, only if the vector sum of all the forces acting on it becomes.

Choose an answer

Double

Zero

Maximum

Quadruples

The permeability of a diamagnetic material is

Choose an answer

Greater than unity

Less than unity

Equal to unity

Zero

Ebers-Moll model describes the working of a

Choose an answer

BJT

FET

MOSFET

UJT

An increase in frequency above threshold frequency results in.

Choose an answer

Increase in photo electric current

Increase in K.E. of electrons

Decrease in photoelectric current

Decreases in K.E. of electrons

The ration Cv/Cp = y for a diatomic gas like air is

Choose an answer

1.29

1.30

1.40

1.67

The magnus effect is equivalent to

Choose an answer

Bernouli's theorem

Archimedes principle

Pascal's law

Blood pressure

The minimum angle of incidence for which total internal reflection can occur is called.

Choose an answer

Right angle

Acute angle

Critical angle

Obtuse angle

For the angular momentum of a system to remains constant, the external torque should be

Choose an answer

small

Large

Neither small nor large

zero

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 body of mass 8 kg moves along a circle of radius 4 m with constant speed of 88 m s-1 The centripetal force on the body is.

Choose an answer

10 N

128 N

48 N

148 N

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