Which of the following statement(s) is/are true with respect to the speed of sound at 25°C in different mediums? A. In steel, the speed of sound is 5960 m/s. B. In nickel, the speed of sound is 6040 m/s.
Which of the following statement(s) is/are true with respect to the speed of sound at 25°C in different mediums? A. In steel, the speed of sound is 5960 m/s. B. In nickel, the speed of sound is 6040 m/s. Correct Answer Both A and B are true.
The correct answer is Both A and B are true.
Key Points
- Speed of Sound
- In a medium, the speed of sound depends upon the elasticity and density of the medium.
- When sound enters from one medium to another medium, its speed and wavelength change but frequency remains unchanged.
- In a medium, the speed of sound is independent of frequency.
- Speed of sound is maximum in solids and minimum in gases.
- The speed of sound is more in humid air than in dry air because the density of humid air is less than the density of dry air.
- The unit of loudness is the decibel (dB).
- Effect of pressure on the speed of sound:
- The speed of sound is independent of pressure.
- Effect of temperature on the speed of sound:
- The speed of sound increases with the increase of the temperature of the medium.
- In steel, the speed of sound is 5960 m/s. Hence, option A is correct
- In nickel, the speed of sound is 6040 m/s. Hence, option B is correct.
Important Points
In any medium, if the temperature increases, the speed of sound also increases and vice versa.
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https://ncert.nic.in/ncerts/l/iesc112.pdf |
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Feb 20, 2025