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WB JEE 2018
MCQ (More than One Correct Answer)
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The intensity of a sound appears to an observer to be periodic. Which of the following can be the cause of it?
A
The intensity of the source is periodic
B
The source is moving towards the observer
C
The observer is moving away from the source
D
The source is producing a sound composed of two nearby frequencies
Questions Asked from MCQ (Multiple Correct Answer)
WB JEE Subjects