Physics
Related Questions
Match the following:
Column A Column B (a) Vibrations cause (i) absorb sound (b) A shriller sound is (ii) second (c) Unit of frequency (iii) sound (d) Unit of time period (iv) of high pitch (e) Curtains (v) hertz We can distinguish a shrill sound from a flat sound by its:
- amplitude
- loudness
- pitch
- none of the above
Sound cannot travel in:
- gases
- liquids
- solids
- vacuum
The minimum distance required between the source and the reflector so as to hear the echo in air is:
- 10 m
- 17 m
- 34 m
- 50 m