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प्रश्न
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उत्तर
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संबंधित प्रश्न
Complete the following sentences :
Sound cannot travel through __________, but it requires a ___________.
Draw a displacement-time graph for water wave.
A thin metal plate is placed against the teeth of cog wheel. Cog wheel is rotated at a speed of 120 rotations per minute and has 160 teeth. Calculate:
- frequency of node produced.
- speed of sound, if wavelength is 1.05 m.
- what will be the effect when the speed of cog wheel is doubled?
On placing your ear close to an iron railing which is tapped some distance away, sound is heard twice. Explain, why?
How do the following factor affect the speed of sound in air?
Temperature of air
What is the effect of temperature and pressure on the speed of sound in a gas?
Distinguish between light and sound waves. What are the consequences of the large difference in the speed of sound and that of light? Briefly explain them.
A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case
In longitudinal waves, the particle vibrates in a ______ direction of propagation.
