Q. Two vibrating tuning forks produce progressive waves given by y₁ = 4 sin 500πt and y₂ = 2 sin 506πt. Number of beats produced per minute is :

A) 360
B) 180
C) 120
D) 30
Explanation

[Solution from source] ω₁ = 500π gives f₁ = 250 Hz and ω₂ = 506π gives f₂ = 253 Hz. Beat frequency = 3 per second = 180 per minute. 360 per minute would double the true beat frequency of 3 Hz. Answer (2).

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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