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SURA PUBLICATION-ACOUSTICS-ADDITIONAL QUESTIONS & ANSWERS (FILL IN THE BLANKS (COVERS THE WHOLE UNITS))
- Expansion of SONAR .
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- is the frequency of the sound as heard by the listener.
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- The product of the time period of a wave and its frequency is .
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- In ordinary talk, amplitude of vibration is approximately .
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- If the time period of a wave increases then its frequency will .
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- In a whispering hall, the speech of a person standing in one focus can...
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- The angle which the incident sound wave makes with the normal is calle...
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- The angle formed between the reflected ray and the normal is ------.
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- A compression travelling towards the rigid wall is reflected back as a
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- Rarefaction travels from to .
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- waves are sound waves with frequency below 20 Hz.
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- Waves produced during an earthquake and ocean waves are called waves.
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- waves with frequency greater than 20 kHz.
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- Human ear cannot detect waves.
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- Bats can detect waves.
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- Sound waves requires a for propagation.
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- Light waves are .
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- The wavelength of sound waves ranges from .
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- The wavelength of light waves ranges from .
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- Two types of velocity are velocity and velocity.
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