AIPMT PRELIMS2005Physics-Waves
AIPMT PRELIMS 2005 Physics Beat Frequency MCQ Question
Type: MCQ-numerical-Medium-Class 11
Two vibrating tuning forks produce progressive waves given by y₁ = 4 sin 500 πt and y₂ = 2 sin 506 πt. Number of beats produced per minute is:
A
360
B
180
C
120
D
30
Correct Answer
Option B
Detailed Explanation
The beat frequency is the difference in frequencies of the two waves. Here, the frequencies are 250 Hz and 253 Hz, respectively. The beat frequency is 3 Hz, resulting in 180 beats per minute.
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