Question # 1

Two waves of same frequency and moving in the same direction produces.

Choose an answer

Interference

Diffraction

Beats

Stationary waves

The waves used in radar speed trap are

Choose an answer

Longitudinal

Sound wave

Micro waves

Matter waves

The speed of sound in air would become double than ots speed at 10^oC at a temperature of.

Choose an answer

313 ^oC

586 ^oC

859^oC

899 ^oC

Speed of sound in vacuum is

Choose an answer

280 ms-1

332 ms-1

333 ms-1

Zero ms-1

Radar system is an application of.

Choose an answer

Chemical effect

Electric effect

Magnetic effect

Doppler's effect

Sound wave can not be

Choose an answer

Reflected

Refracted

Diffracted

Polarized

the wavelength of transverse wave travelling with a speed 'v' having frequency 'f' in equal to

Choose an answer

f/v

Vf

V/f

f/V2

Teh speed of sound in air is 340 m/s. If the pressure of air is doubled then the speed becomes.

Choose an answer

Double

Half

Four times

Remains same

Beats can be heard when difference of frequency is not more than.

Choose an answer

8 Hz

10 Hz

4 Hz

6 Hz

When two waves of same frequency travel in opposite direction, the phenomenon will be

Choose an answer

Diffraction

Stationary waves

Polarization

Interference

When two identical travelling waves are superimposed, velocity of resultant wave.

Choose an answer

Decreases

Increases

Remain same

Becomes zero

Half wavelength corresponds to

Choose an answer

0 ^o

90 ^o

180 ^o

360 ^o

If the pressure of a gas is doubled, then speed of sound is.

Choose an answer

Doubled

Become half

Not affected

Increases by four times

the velocity of sound at 0 ^oC is 332 ms-1, the velocity of sound at 10 ^oC will be

Choose an answer

337.1 ms-1

338.1 ,ms-1

342.1 ms-1

328.1 ms-1

On loading the prong of a tuning fork with wax, the frequency of sound.

Choose an answer

Increases

Decreases

Remains same

First increases then decrease

Increase in speed of sound for 1 ^oC rise in temperature is.

Choose an answer

0.61 ms-1

0.61 cms-1

61 ms-1

6.1 ms-1

The experimental value for the velocity of sound in air is

Choose an answer

233 m-sec^-1

333 m-sec^-1

433 m-sec^-1

533 m-sec^-1

More Classes

Other Links

Physics Fsc Part 1 Chapter 8 Online Test 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