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Assertion: The whistle of an approaching...

Assertion: The whistle of an approaching engine appears to be shriller than that of a receding engine.
Reason: This is due to Doppler effect, which states that if a source of sound approaches the observer, the frequency of sound increases and if the source recedes the observer, the frequency of sound decreases.

A

Assertion is True, Reason is True, Reason is a correct explanation for Assertion

B

Assertion is True, Reason is True, Reason is not a correct explanation for Assertion

C

Assertion is True, Reason is False

D

Assertion is False but, Reason is True.

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TARGET PUBLICATION-Sound-Exercise
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  2. A boy moves away from a steady source of sound at a constant speed. Th...

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  3. Assertion: The whistle of an approaching engine appears to be shriller...

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  4. Assertion: There will be no Doppler effect, when both the source and l...

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  5. Doppler’s effect for light differs from Doppler’s effect for sound, be...

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  6. A source of sound when moves towards a stationary observer, then frequ...

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  7. An observer is standing on a railway platfonn. He hears the whistle of...

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  8. A source of sound and a listener are both moving in the same direction...

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  9. The property that distinguishes longitudinal waves from transverse wav...

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  10. A hospital uses an ultrasonic scanner to locate tumours in a tissue. T...

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  11. Choose the correct option? A source of frequency 500 Hz produces wave...

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  12. Choose the correct option? A tuning fork vibrates and produces concen...

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  13. Loudness of the sound does not depend upon

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  14. The temperature at which the velocity of sound in air will be 1.5 time...

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  15. Human ear cannot hear those mechanical waves whose frequency lies in t...

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  16. In oscillatory motion, particles of the medium perform

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  17. For a wave which of the following statement is true?

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  18. In case of sound waves, amplitude means

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  19. Which of the following is NOT the characteristic of the progressive wa...

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  20. A tuning fork produces waves in a medium. If the temperature of the me...

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