Sound Test - 5...

Which of the following formulas is correct? (Where symbols have their usual meanings.)

Sound waves are produced by ______________.

If the loudness is measured as 10 phon and intensity is measured as 100 , find constant of proportionality.

Match the following factors with their characteristics.

Which of the following is incorrect regarding sound waves?

What is the audible range of sound for humans?

Which of the following is an example of resonant vibrations?

Before playing the orchestra in a musical concert, a guitarist tries to adjust the tension and pluck the string suitably. By doing so, he is adjusting:

When can the echo NOT be heard?

Shyam heard the thunder after 7 seconds when he saw the lightening. How far is he form the lightening, if velocity of the sound is 343 m/s?

In which of the following vibrations, the energy lost by vibrating body gradually converts into heat energy, and gets dissipated in surrounding system?

The length of a simple pendulum is 39.2 m. Find its frequency.

Which of the following does not depend upon amplitude of wave?

On which of the following factors does loudness of sound NOT depend?

The minimum distance between the particles in a medium vibrating with the sane phase of a wave is ____________.

Rita hears an echo of her own voice while standing at the peak of a mountain after 12 seconds. The speed of sound in air is 340 m/sec. How far did her voice travel?

The loudness of sound varies directly with the vibrating body’s _________.

Which of the following statements defines damped vibrations?

Which of the following characteristics refers to the shrillness of sound?

What is the percentage change in intensity of sound when the change in level of loudness is 1 dB?