Telangana Board Solutions for Chapter: Sound, Exercise 1: Exercise 1

Does the sound follow same laws of reflection as light does?

Two sources $A$ and $B$ vibrate with the same amplitude. They produce sounds of frequencies, $1 \mathrm{kHz}$ and $30 \mathrm{kHz}$ respectively. Which of the two waves will have larger power?

You might have observed that sometimes your pet dog starts barking though no one is seen near in its surroundings or no disturbance heard nearby. Does this observation raise any doubts in your mind about the peculiar behaviour of dog after your understanding about 'range of hearing the sound'? If yes, write them.

With the help of a diagram describe how compression and rarefaction pulses are produced in air near a source of sound.

How are multiple reflections of sound helpful to doctors and engineers?

Explain the working and applications of SONAR.

How do you appreciate efforts of a musician to produce melodious sound using a musical instrument by simultaneously controlling frequency and amplitude of the sounds produced by it?

How do echoes in a normal room affect the quality of the sounds that we hear?