Question # 1

Thermodynamics concern its primary with the

Choose an answer

Measurement of quantity of heat

Physical effects of temperature changes

Conversion of heat into other energy forms

Behavior of gases

In which process the passage of an electric current through a conductor releases heat.

Choose an answer

Joule heating

Ohmic heating

resistive heating

All of these

Soap film in sunlight appears coloured due to

Choose an answer

Dispersion of light

Diffraction of light

Scattering of light

Interference of light

Magnetic moment is a

Choose an answer

Scalar

Vector

Phasor

Tensor

Which given quantity remains the same in isotones.

Choose an answer

Mass number

Atomic number

Number of neutrons

Number of protons

Torque is equal to.

Choose an answer

The product of magnitude of force and acceleration

The product of magnitude of force and momentum

The product of magnitude of force and displacement

The product of magnitude of force and angular velocity

Positron are produced during.

Choose an answer

Annihilation

ionization

Pair production

x rays production

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

Choose an answer

Base

Emitter

Collector

Grid

Which of the following is a thermodynamic potential

Choose an answer

Internal energy

Enthalpy

Gibb's free energy

All of these

The continuous X rays spectrum is due to an effect.

Choose an answer

Bremsstrahlung

Breaking radiation

Holography

both a and b

Which of the following are defects in human eye.

Choose an answer

Myopia

Hypermetropia

Presbyopia

All of these

If a wave vibrate 10 times in 1 s with a speed of 10 m s-1 the correct wavelength of the wave is.

Choose an answer

1 m

10 m

20 m

100 m

Which experiment is a demonstration that matter and energy can display properties of both waves and particles.

Choose an answer

young's double slit experiment

Division germier experiment

Heisenberg's uncertainty experiment

Stern Gerlach experiment

The circuit in which current and voltage are in phase the power factor is.

Choose an answer

Zero

Unity

Double

4 times

What is the scale for measurement of Banbridge mass spectrograph.

Choose an answer

Linear

Inverse

Exponential

Logarithmic

The mechanical equivalent of heat

Choose an answer

Has the same dimension as heat

Has the same dimension as work

Has the same dimensions as energy

Is dimensionless

With which factor disputative power of a grating increases.

Choose an answer

Order of spectrum

Number of lines per centimeter

Order and number of lines per centimeter

Shape of the grating

The magnitude of the resultant of two forces may be increased by

Choose an answer

Increasing the angle between them

Decreasing the angle between them

Drawing the parallelogram to represent them

Drawing the force perpendicularly

The absorption of X-rays in a given material follows.

Choose an answer

A parabola path

Is straight line

An exponential curve

A circle

The resistance of a coil changes directly with

Choose an answer

The current of A.C.

The frequency of A.C

The inductance

Both B and C

When we decrease the diameter of the objective lens of a telescope the resolution of telescope

Choose an answer

Increases

Decreases

Remain the same

Depends upon the focal length of the lens

To final image produced by a compound microscope is.

Choose an answer

Real and inverted

Real and erect

Virtual and erect

Virtual and inverted

Optics is the

Choose an answer

Scientific study of light and vision

Scientific study to sound

Scientific study of time

Scientific study of fluid

Which material has the greatest di electric constant.

Choose an answer

Mylar

Glass

Germanium

Water

The circular motion of a particles with constant speed is.

Choose an answer

Periodic and SHM

Periodic but not SHM

SHM and not periodic

Neither periodic nor SHM

The quality of sound

Choose an answer

Decreases with pitch

Varies directly as its pitch

Varies inversely as its pitch

Depends upon the overtones present there

A straight copper wire a moved in a uniform magnetic field such that it cuts the magnetic lines of force then.

Choose an answer

emf will not be induced

emf will beinduced

sometimes emf will be induced and sometimes not

The number of turns iin the coil increases

Mostly widely used types of gas LASER are.

Choose an answer

Neon

Argon ion

Helium

All of these

When a beta particle travels though a medium it knocks out electrons from the atoms due to.

Choose an answer

Gravitational force of attraction

Electrostatic force of repulsion

Nuclear force

Electromagnetic induction

Which of the following is dimensionless.

Choose an answer

Strain

Stress

Pressure

Volume

The amplitude of sound wave determines its

Choose an answer

Pitch

Loudness

Reverberation

Interference

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