- 1(current)
Q. No.Which of the following is a mechanical wave?
| 1. | Radio waves | 2. | X-rays |
| 3. | Light waves | 4. | Sound waves |
Subtopic: Â Types of Waves |
 87%
From NCERT
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Velocity of sound in air is \(332\) m/s. Its velocity in the vacuum will be:
1. \(>332\) m/s
2. \(=332\) m/s
3. \(<332\) 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 |
 54%
From NCERT
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- 1(current)
Q. No.
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