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प्रश्न
Sound travels in air:
विकल्प
if there is no moisture in the atmosphere.
if particles of medium travel from one place to another.
if both particles as well as disturbance move from one place to another.
if disturbance moves.
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उत्तर
if particles of medium travel from one place to another.
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संबंधित प्रश्न
| Column A | Column B |
| (a) Vibrations cause | (1) absorb sound |
| (b) A shriller sound is | (2) second |
| (c) Unit of frequency | (3) sound |
| (d) Unit of time period | (4) of high pitch |
| (e) Curtains | (5) hertz |
What is the nature of sound waves in air?
Are sound waves longitudinal or transverse?
What is sound? What type of waves are sound wave in air?
The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the time period.
The distance between three consecutive crests of wave is 60 cm. If the waves are produced at the rate of 180/ min, calculate:
- wavelength
- time period
- wave velocity.
A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case
Which of the following statements are correct?
- Sound is produced by vibrations.
- Sound requires a medium for propagation.
- Light and sound both require a medium for propagation.
- Sound travels slower than light.
Find the odd one out.
