- 1(current)
Q. No.Which of the following is a mechanical wave?
1. Radio waves
2. \(X\text-\)rays
3. Light waves
4. Sound waves
Subtopic: Â Types of Waves |
 87%
From NCERT
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The velocity of sound in air is \(332~\text{m/s}.\) Its velocity in the vacuum will be:
1. \(>332~\text{m/s}\)
2. \(=332~\text{m/s}\)
3. \(<332~\text{m/s}\)
4. meaningless
1. \(>332~\text{m/s}\)
2. \(=332~\text{m/s}\)
3. \(<332~\text{m/s}\)
4. meaningless
Subtopic: Â Types of Waves |
 63%
From NCERT
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A wave moving in a gas:
| 1. | must be longitudinal | 2. | may be longitudinal |
| 3. | must be transverse | 4. | may be transverse |
Subtopic: Â Types of Waves |
 53%
From NCERT
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- 1(current)
Q. No.
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