Waves Test - 25...

Two small boats are $$10m$$ apart on a lake. Each pops up and down with a period of  $$4.0\ \text{seconds}$$ due to wave motion on the surface of the water. When one boat is at its highest point, the other boat is at its lowest point. Both boats are always within a single cycle of the waves. The speed of the waves is

If the frequency of a wave is increased by 25 %, then the change in its wavelength will be:
(medium not changed)

An object is vibrating at $$50$$ hertz. What is its time period?

The frequency of a man's voice is 300 Hz and its wavelength is 1 meter. If the wavelength of a child's voice is 1.5 m, then the frequency of the child's voice is :

Sound waves are .................... waves.

Frequency of the sinusoidal wave, y = 0.40 cos (2000t + 0.080) would be :

The frequency of sound waves is 11 kHz and its wavelength is 20 cm, then the velocity of sound waves is :

The type of waves is/ are

If the vibration of particles in a wave is perpendicular to the direction of propagation of wave, then it is called,

Elastic waves in solid are :