Q. No.Given below are two statements:
| Statement I: | Sound waves travelling from air into water, incident obliquely, bend towards the normal. |
| Statement II: | Sound waves travel more slowly in water than in air. |
| 1. | Statement I is incorrect and Statement II is correct. |
| 2. | Both Statement I and Statement II are correct. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Statement I is correct and Statement II is incorrect. |
Subtopic: Speed of Sound |
From NCERT
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When sound waves produced under water emerge into the air, then:
| 1. | the frequency increases, and wavelength decreases. |
| 2. | the frequency remains constant, but the wavelength decreases. |
| 3. | the frequency decreases, wavelength remains constant. |
| 4. | the frequency remains constant but the wavelength increases. |
Subtopic: Speed of Sound |
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The speed of sound in air within a room:
| 1. | changes with pressure and temperature |
| 2. | changes with pressure only |
| 3. | changes with temperature only |
| 4. | is unaffected by changes in pressure and temperature |
Subtopic: Speed of Sound |
55%
From NCERT
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If the ambient pressure of air increases by the speed of sound in air:
| 1. | increases by |
| 2. | increases by |
| 3. | remains unchanged |
| 4. | decreases by |
Subtopic: Speed of Sound |
57%
From NCERT
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The square of the speed of sound in a mono-atomic gas is proportional to:
| 1. | its internal energy |
| 2. | its internal energy per unit volume |
| 3. | its internal energy per unit mass |
| 4. | its internal energy per unit temperature |
Subtopic: Speed of Sound |
58%
From NCERT
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In which of the following media is the speed of sound the highest?
| 1. | Air | 2. | Hydrogen |
| 3. | Water | 4. | Steel |
Subtopic: Speed of Sound |
65%
From NCERT
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If the absolute temperature of a gas is increased by the speed of sound in the gas:
1. increases by
2. decreases by
3. increases by
4. increases by
Subtopic: Speed of Sound |
66%
From NCERT
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If the absolute temperature increases by , the frequency of an organ pipe will:
| 1. | increase by | 2. | decrease by |
| 3. | increase by | 4. | decrease by |
Subtopic: Speed of Sound |
75%
From NCERT
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Given below are two statements:
| Statement I: | The speed of sound waves in a medium depends on the elastic modulus and the density of the medium. |
| Statement II: | The speed of sound in a gas is independent of its temperature. |
| 1. | Statement I is incorrect and Statement II is correct. |
| 2. | Both Statement I and Statement II are correct. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Statement I is correct and Statement II is incorrect. |
Subtopic: Speed of Sound |
72%
From NCERT
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The sound of thunder is heard after the flash of lightning is observed. The speed of sound in air is nearly The distance of the lightning strike is nearly: (assume speed of light is infinite)
1.
2.
3.
4.
1.
2.
3.
4.
Subtopic: Speed of Sound |
75%
From NCERT
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