Question # 1

In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:

Choose an answer

Motion emf

Electrostatic emf

Induced emf

Both A and B

Both A and C

According to Einstein, with the great increase in the speed of the body the relativistic length of the body

Choose an answer

Remains constant

Decreases

Increases

Reduces to zero

Referring to above figure, due to change in current in the coil P, the change in magnetic flux:

Choose an answer

Is associated with coil P

Is associated with coil S

Causes an induced current is coil S

All of these

None of these

The peak voltage in a 220 volt A.C. supply is nearly

Choose an answer

220 volt

253 volt

.311 volt

440 volt

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Choose an answer

Sinusoidal shape with amplitude A/3

Sinusoidal shape with amplitude A/2

Sinusoidal shape with amplitude A

Straight line

The temperature at which the vibrations become so great that structure of the Crystal breaks up, is called:

Choose an answer

Critical temparature

Temperature of vaporization

Melting point

Both (A) and (C)

Both (A) and (B)

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. The angle which the force makes the direction of motion will be:

Choose an answer

60°

90°

30°

0°

The voltage increases linearly with

Choose an answer

time

velocity

acceleration

torque

The direction of induced current is always so as to oppose the cause which produces it. This is

Choose an answer

Lenz's law

Ampere's law

Faraday's law

Coulomb's law

None of these

At the temperature, a body emits radiation which is principally

Choose an answer

of long wavelengths in the visible region

of long wavelengths in the invisible infrared region

of short wavelength in invisible ultraviolet region

none of these

The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structure are

Choose an answer

5

7

9

14

Einstein predicted the shift of light by sun coming from star towards Earths was the same as during the solar eclipse in 1919 is

Choose an answer

Φ = 1.235 sec of angle

Φ = 1.367 sec of angle

Φ = 1.693 sec of angle

Φ = 1.745 sec of angle

The value of Faraday number is SI unit is

Choose an answer

9.65 Coulomb/kg/equivalent

9.65 x 10⁷Coulomb/kg/equivalent

9.65 x 10^-7Coulomb/kg/equivalent

9.65 Coulomb/kg/equivalent

In a soft iron, domains are

Choose an answer

easily oriented along external field and do not return to original random positions

easily oriented along external field and readily returns to originally random positions

do not oriented along external field and also do not returns to original random position

none of them

In an isothermal process, the change is internal energy is

Choose an answer

Maximum

Zero

Very small

None of these

Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called

Choose an answer

tiny regions

domains

vectors

none of them

Which does not show polarization

Choose an answer

Longitudinal wave in gas

Transverse wave in gas

Both a and b

None of these

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15 m is

Choose an answer

9 x 10⁵ V

9 V

8 x 10⁶ V

80 V

The centripetal acceleration is supplied by

Choose an answer

Applied force

Gravity

Initial velocity

None of these

The ballistic missiles are useful only for

Choose an answer

long ranges

short ranges

medium ranges

none of them

The original source of geothermal energy is

Choose an answer

Biomass

Fossil fuels

Moon

Earth

A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h.The force required to stop the vehicle in 10s force required to stop the vehicle in 10s is:

Choose an answer

120 x 10.8 N

180 N

720 N

360 N

More Classes

Other Links

Physics General Science Test Medium Mode 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