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प्रश्न
Fill in the blank.
We can hear sounds of frequency in the range of _______
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उत्तर
We can hear sounds of frequency in the range of 20 Hz to 20,000 Hz.
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संबंधित प्रश्न
Fill in the blank.
The pitch of a sound depends on its ________.
To detect the obstacles in their path, bats produce ______.
Distinguish between loudness and intensity of sound.
Draw a displacement-distance graph of a wave and mark on it, the amplitude of wave by the letter 'a' and wavelength of wave by the letter λ.
Sound is generated by the rhythmic ______ of an object.
Can you hear the sound produced due to the vibrations of second's pendulum?
Match the following.
| Ultrasonics | Frequency below 20Hz |
| Speed of sound in air | Needs material medium |
| Infrasonics | 330ms-1 |
| Sound propagation | Frequency more than 20000 Hz |
Consider the statement given below and choose the correct option.
Assertion: When lightning strikes, the sound is heard a little after the flash is seen.
Reason: The velocity of light is greater than that of the sound.
Assertion: The sound of thunder is heard a little later than the flash of light.
Reason: The speed of sound is much less than the speed of light.
