Waves Test - 11...

The product of the time period of a wave and its frequency is

Which of the following quantity decrease as sound wave travels through a medium :

Two waves $${y_1} = {A_1}\sin (\omega t - {\beta _1}){y_2} = {A_2}\sin (\omega t - {\beta _2})$$ superimpose to form a resultant wave whose amplitude is

When two plane progressive waves travelling in same direction superimpose over each other, the velocity of the resultant wave will

What will be the wave velocity, if the radar gives 54 waves per min and wavelength of the given wave is 10 m?

The frequency of a man's voice is $$300\space Hz$$. If the velocity of sound waves is $$336\space ms^{-1}$$, the wavelength of the sound is

If the energy density and velocity of a wave are $$u$$ and $$c$$ respectively then the energy propagating per second per unit area will be

An ultrasonic source emits sound of frequency 220 kHz in air. If this sound meets a water surface, what is the wavelength of the reflected sound?

A piezo - electric quartz plate is vibrating to produce wavelength of $$10^{-1}$$ m. Find the frequency if for quartz $$Y=8 \times 10^{10} N  m^{-2}$$ and $$\rho = 2.65 \times 10^3  kg  m^{-3}$$

The particle of a medium vibrates about their mean position whenever a wave travels through that medium. The phase difference between the vibrations of two such particles