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11
At a given temperature, . . . . . . . . has a highest speed of sound.
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Answer & Solution
Answer: Option B
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12
Two astronauts cannot hear each other on the Moon's surface, because
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Answer: Option B
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13
Which one of the following does a TV remote control unit use to operate a TV set?
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Answer: Option D
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14
Which of the following is a mechanical wave?
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Answer: Option D
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15
The distance between node and adjacent anti-node is 30 em. The wavelength is
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Answer: Option C
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16
The pitch of sound depends on-
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Answer: Option C
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17
. . . . . . . . the frequency is expressed in the event repeated per second.
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Answer: Option D
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18
The compression is made at the place where the air pressure is-
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Answer: Option D
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19
Which of the following statements are true/false about the speed of sound in a different medium at 25°C?
A. The speed of sound in oxygen gas is 316 m/s.
B. Speed of sound in distilled water is 1498 m/s.
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Answer & Solution
Answer: Option A
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20
If the temperature increases, the speed of sound:
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Answer: Option D
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