Two sources of sound placed close to each other are emitting progressive waves given by $y_{1} = 4 \sin 600 πt and y_{2} = 5 \sin 608 πt$ . An observer located near these two sources of sound will hear:

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

4 beats per second with intensity ratio 81 :1 between waxing and waning

4 beats per second with intensity ratio 25 : 16 between waxing and waning

8 beats per second with intensity ratio 25 : 16 between waxing and waning

8 beats per second with intensity ratio 81 : 1 between waxing and waning

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

$\frac{I_{1}}{I_{2}} = \frac{{(A_{1} + A_{2})}^{2}}{{(A_{1} - A_{2})}^{2}} = \frac{81}{1}$

Beat frequency = 304 - 300 = 4 Hz.

Watch 3-min video & get full concept clarity

JEE

NEET

Foundation JEE

Foundation NEET

CBSE