AIPMT PRELIMS2000Physics-Waves
AIPMT PRELIMS 2000 Physics Beat Frequency MCQ Question
Type: MCQ-numerical-Medium-Class 11
Two stationary sources each emitting waves of wave length λ. An observer moves from one source to other with velocity u. Then number of beats heared by him :
A
2u/λ
B
u/λ
C
√u/λ
D
u/2λ
Correct Answer
Option A
Detailed Explanation
The beat frequency is determined by the relative velocity of the observer and the wavelength, calculated as u/λ.
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