Advertisements
Advertisements
प्रश्न
A list of mediums is given below.
- wood
- water
- air
- vacuum
In which of these mediums can sound travel?
विकल्प
i & ii only
i, ii & iii only
iii & iv only
ii, iii & iv only
Advertisements
उत्तर
i, ii & iii only
Explanation:
Sound requires any medium to travel but in vacuum there is no medium, so sound cannot travel through them.
APPEARS IN
संबंधित प्रश्न
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
How is sound produced ?
How does the loudness of sound produced depend on the vibrating area of the body ?
Distinguish between compression and rarefaction.
Match the pairs.
| Group ‘A’ | Group ‘B’ |
| (a) Flute | (1) Frequency less than 20 Hz |
| (b) Frequency | (2) Frequency more than 20000 Hz |
| (c) Sound level | (3) Vibrations in the air |
| (d) Ultrasonic sound | (4) Measured in Hz |
| (e) Infrasonic sound | (5) Decibel |
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.
On placing your ear close to an iron railing which is tapped some distance away, sound is heard twice. Explain, why?
A person hearing at one end of a long metal bar hears two distinct sounds when the other end is struck with a stone. Explain, giving scientific reasons
Suppose that a sound wave and a light wave have the same frequency, then which one has a longer wavelength?
