Question # 1

For the working of a heat engine, there must be

Choose an answer

a source of heat at high temperature

a sink at low temperature

both of them

none of them

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Choose an answer

400 m/sec

40 m/sec

430 m/sec

300 m/sec

For a moving body, at any instant of time

Choose an answer

If the body is not moving the acceleration is necessarily zero

If the body is slowing, the retardation is negative

If the body is slowing, the distance is negative

If displacement, velocity and acceleration at that instant are known, we can find the displacement at any given time in future

At resonance frequency the impedance of parallel resonance circuit is

Choose an answer

Maximum

Minimum

Zero

None of the above

The critical temperature of mercury is

Choose an answer

1.18 K

4.2 K

3.72 K

7.2 K

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

Choose an answer

Q=V/C

Q=C/V

Q=1/2CV

Q=CV

The positron was discovered by:

Choose an answer

In cosmic radiation

In 1932

By Carl Anderson

All above

By direc

10⁶electrons are moving through a wire per second, the current developed is

Choose an answer

1.6 x 10^-19

1 A

1.6 x 10^-15A

10⁶A

The length of rotating vector (on a certain scale) represents the:

Choose an answer

Peak value of alternating quantity

RMS value of alternating quantity

Instantaneous value of alternating quantity

Either (B) or (C)

Either (A) or (B)

The value of resistivity is the least for:

Choose an answer

Copper

Aluminimum

Silver

Tungsten

Iron

The power factor of resonant series circuit is

Choose an answer

1

0

-1

0.5

Which of the following gives three regions of the electromagnetic spectrum in order of increasing wavelength?

Choose an answer

Gamma rays,microwaves,visible radiation

Ultraviolet infra-red microwaves

Radio waves ultraviolet X-rays

Visible radiation gamma rays radio waves

Two row boats moving parallel in the same direction and pulled toward each other due to the application of Bernoulli's equation

Choose an answer

Stake's theorem

Toricelli's theorem

Venturi relation

None of these

The turning effect of a force is called:

Choose an answer

Acceleration

Torque

Velocity

Momentum

A body is in its state of stress when it is

Choose an answer

Displaced from its equilibrium position

Remains at rest when shape changed

Their angles change

All of them

A diffraction grating has 500 liens per mm. its slit spacing or grating element will

Choose an answer

500 mm

5 x 10^-3mm

2 x 10^-5mm

2 x 10^-3mm

Energy can be obtained form solid waste by

Choose an answer

Direct combustion

Indirect combustion

Permentation

None of these

Diameter of nucleus is

Choose an answer

10^-12

10^-15

10^-16

None of these

The value of universal gas constant R is:

Choose an answer

8.314 J/K mole K

8314 J/ mole K

8.314 J/ mole K

None of these

If the error in the measurement radius of a sphere is 1% then the error in the measurement of volume will be

Choose an answer

8%

5%

3%

1%

Moment of inertia of thin rod is

Choose an answer

1/2 mL²

1/6 mL²

1/12 mL²

1/15 mL²

The diffraction is found to be prominent when the wavelength of light is

Choose an answer

small as compared with the size of obstacle

large as compared with the size of obstacle

equal as compared with the size of obstacle

Very small as compared with the size of the obstacle

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