Waves Test - 14...

Mark the correct match.

Mark the correct statement

The quantity $$\dfrac{1}{\lambda}$$ is known as:

When a wave travels in a medium, _______ is transferred from one place to other with the wave.

Soundproof walls use materials that

Sound waves get reflected from :

Mark the correct statements.
(I) directions in which the sound is incident and is reflected make equal angles with the normal to the reflecting surface.
(II) reflection of sound occurs from a polished surface.
(III) reflection of sound occurs from rough surface.

Two particles on a wave having wavelength $$2$$m are at the distances of $$5$$m and $$9$$m respectively from origin. The phase difference between the particles is ________.

Working of radars in oceans is based on the principle of

The frequency of light in air is $$5\times 10^{14}Hz$$. What will be the frequency of light, when it enters in the water?