Lakhmir Singh and Manjit Kaur Solutions for Chapter: Sound, Exercise 24: Multiple Choice Questions (MCQs)

Sound travels in air:

In the sound wave produced by a vibrating tuning fork shown in the diagram, half the wavelength is represented by:

The maximum speed of vibrations which produce audible sound will be in:

The sound waves travel fastest:

The speeds of sound in four different media are given below. Which of the following is the most likely speed in $\mathrm{m} {\mathrm{s}}^{-1}$ with which the two underwater whales in a sea talk to each other when separated by a large distance?

When the pitch of the note produced by a harmonium is lowered, then the wavelength of the note:

The velocities of sound waves in four media $\mathrm{P}, \mathrm{Q}, \mathrm{R}$ and $\mathrm{S}$ are $\mathrm{18,000} \mathrm{k}\mathrm{m}/\mathrm{h}$, $900 \mathrm{k}\mathrm{m}/\mathrm{h}, 0 \mathrm{k}\mathrm{m}/\mathrm{h}$, and $1200 \mathrm{k}\mathrm{m}/\mathrm{h}$ respectively. Which medium could be a liquid substance?

Which of the following can produce longitudinal waves as well as transverse waves under different conditions?