A sound wave propagating in air has a frequency of 4000Hz. Calculate the percentage change in wavelength when the wavefront initially in a region where `T=27^(@)C` enters a region where temperature decreases to `10^(@)C`.

The frquency of a sound wave propagating in air is 3000 Hz. The waves were initially in region where T = 30^(@)C and then enter in the region where T = 10^(@)C . Calculate the percentage change in wavelength.

The frequency of a sound wave propagating in air is 3000 Hz. The waves are propagating from a region where T = 30^(@) C to the region where T = 20^(@)C . What will be the percentage change of wavelength ?

A tuning fork of frequency 220Hz produces sound waves of wavelength 1.5m in air at NTP. Calculate the increase ini wavelenth, when temperature of air in 27^(@)C .

The fundamental frequency of a closed pipe is 293 Hz when the air in it is at a temperature of 20^@C . What will be its fundamental frequency when the temperature changes to 22^@C ?

A tuning fork vibrates at a frequency of 256 Hz . (a) When the air temperature increases, the wavelength of the sound from the tuning fork : (i) increase, (ii) remains the same, (iii) decrease. Why ? (b) If the temperature rises from 0^@ to 20^@ C , what is the change in wavelength ?

At STP sound waves of wavelength 2 m are produced in air by a tuning fork of frequency 200 Hz. What will be increase of wavelength at a temperature of 27^(@)C ?

Consider a wave propagating in the negative x-direction whose frequency is 100 Hz . At t = 5 s ,the displacement associated with the wave is given by y=0.5 cos (0.1 x) where x and y are measured in centimetres and t in seconds. Obtain the displacement (as a function of x) at t = 10 s . What is the wavelength and velocity associated with the wave?

Sound waves of wavelength 2 m are produced in air at S.T.P. by a tuning fork of frequency 180 Hz. What will be the increase in wavelength of the sound waves if the temperature of air is 30^(@)C ?

The frequency of the sound emitted by the loudspeaker is 1020 Hz. Calculate the wavelength of the sound wave in air in cm where its velocity is 340 m/s.

A stationary source emits sound of frequency upsilon=1200Hz . If a wind blows at the speed of 0.1c deduce (i) the percentage change in the wavelength and (ii) the change in the frequency for a stationary observer on the wind side of the source. What happens when there is no wind, but the observer moves at speed 0.1c towards the source?