2. Why do we hear the sound produced by the humming bees, while the sound of vibration of pendulum is not heard?
3. Write three differences between transverse wave and longitudinal wave.
4. For which property of Sound of same loudness and pitch but produced by different musical instruments like violin and float are distinguishable.
5. State the laws of reflection of sound.
6. A person is listening to a tone of 500 Hz sitting at a distance of 450 m from the source of the sound . What is the time interval between successive compression from the source ? Take speed of sound in air is 330 m/s.
7. A submarine emits a Sonar pulse, which returns from an underwater cliff in 1.02 second. If the speed of sound in saltwater is 1531m/s, how far away is the cliff?
8. What are longitudinal waves? Give two examples.
9. What are transverse wave? Give two examples.
10. What is stethoscope? Name the principle on which stethoscope works.
Solution:
A. Pdf solution.
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