Sunil Batra Solutions for Chapter: Sound, Exercise 9: CHAPTER PRACTICE TEST 2

Waves of special frequencies are used for cleaning hard to reach places. What is the frequency of these waves?

Waves of special frequencies are used for cleaning hard to reach places. Explain how do these waves perform this work.

Draw a labelled diagram of auditory part of human ear and explain how the human ear works.

In SONAR, we use

When we change feeble sound to loud we increase its

In the curve shown in the figure, half the wavelength is 

A pulse is generated at one end of the slinky of length $10 \mathrm{m}$. The pulse returns back to its point of generation in $10$ seconds. The velocity of the pulse in the slinky will be:

A longitudinal pulse is produced in a slinky. The frequency of the pulse is $60$ $\mathrm{Hz}$ and it travels at a speed of $30$ $\mathrm{cm} {\mathrm{s}}^{-1}$. The separation between consecutive compression is: