Question # 1

who discovered taht mass and energy are forms of each other.

Choose an answer

Issac Newton

Albert Einstein

Galileo

Khawarizmi

Newton's rings are experimentally derived from the phenomenon of.

Choose an answer

Polarization of light

Resolution of light

Interference of light

Diffraction of light

A mason of 9.8 N weight is climbing on a 20 m high ladder The P.E. of mason at the middle of the ladder is.

Choose an answer

98 J

196 J

960 .4 J

1920 .8 J

The function of collimator in spectrometer is to

Choose an answer

Disperse the light

Reflect the light

Make the light parallel

Diffract the light

The half life of a radioactive element depends upon.

Choose an answer

Temperature

pressure

nature of element

quantity of the element

Frequency less than 120 Hz are known as

Choose an answer

Infrasonic

Ultra sonics

Super sonics

Infrared

Wave motion in air consist of

Choose an answer

Longitudinal waves

Transverse waves

Seismic waves

Polarized waves

A choke coil is a coil with

Choose an answer

Low inductance and low resistance

Low inductance and high resistance

High inductance and low resistance

Low inductance and negligible resistance

Why should household appliances be connected in parallel with the voltage source.

Choose an answer

To increase the resistance of the circuit

To decreases the resistance of the circuit

To provide each appliance the same voltage as the power source

To provide each appliance the same current as the power source.

Which of the following wavelength lies in X-rays region.

Choose an answer

1 A

100 A

1,000 A

10,000 A

Which one of the following does not have the same dimenstions.

Choose an answer

Energy ,work, heat

Pressure, stress, Young's modulus

Voltage, electromotive force, potential difference

Electric flux, electric field, electric dipole moment

If velocity is doubled then

Choose an answer

Momentum increase 4 time and K.E. increase 2 times

Momentum increases 2 times and K.E. remains constant

Momentum increases 2 times and K.E. increases 4 times

Both momentum and K.E. remain constant

Lissajou's figures are used in a Cathode Ray Oscilloscope while measuring.

Choose an answer

Time period

Frequency

Voltage gain

phase angle

The ablate of rays of different colours to converge a single point sifter refraction though a convex lens is called.

Choose an answer

Come

Distortion

Spherical aberration

Chromatic aberration

As the mass number varies, which of the quantities does not change w.r.t nucleus.

Choose an answer

Mass

Volume

Binding energy

Density

The SI unit of decay constant is.

Choose an answer

m

m-1

s-1

N m-1

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

If two non zero vectors are perpendicular to each other than their scalar product is equal to

Choose an answer

1

-1

0

infinity

What is the part of a simply D.C. motor that reverses the direction of current through the coil every half cycle.

Choose an answer

Armature

Brushes

Commutator

Slip rings

Which particle interact via all fundamental forces.

Choose an answer

Leptons

Hadrons

Muons

mesons

The actual gas can behave like an ideal gas at

Choose an answer

Low density and high pressure

High density and high pressure

Low density and low pressure

High density and low pressure

Which of the following has the highest relative biological effectiveness or the quality factor.

Choose an answer

X rays and Gama rays

Electrons

Photons

Alpha particles

The sensitiveness of a moving soil galvanometer can be increased by

Choose an answer

Decreasing the number of turns of the coil

Decreasing the area of the coil

Increasing the couple per unit twist of the suspension

Increasing the magnetic flux

What is the power factor of LR circuit.

Choose an answer

Unity

Zero

infinity

Between 0 and 1

Sub atomic paticles whihc does not experience strong nuclear force are.

Choose an answer

hadrons

Photons

Leptons

Nucleons

Temperature changes when two balls collide which one of the following is conserved.

Choose an answer

Angular momentum

linear momentum

Velocity

Kinetic energy

What is term for tendency of a system to oscillate with larger amplitude at some frequencies than at others.

Choose an answer

Resonance

Impedance

Inductance

Capacitance

The material of an electromagnet should have high

Choose an answer

Permeability

susceptibility

Retentivity

Hysteresis loss

Cs - 137 is a radioisotope used ot determine the thickness of the walls of steel pipes Cs 137 is chosen because it emits

Choose an answer

Radiowaves

Alpha particles

Beta particles

gama particles

In any L-C-R circuit

Choose an answer

Current lags the applied voltage

Current leads the applied voltage

Current sometimes leads and sometimes lags the applied voltage

Current remains in phase with voltage

The SI unit of angular momentum is.

Choose an answer

kg m-1 s

kg m2 s

kg m s-1

kg m2 s-1

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