Question

When two tinning forks are surrounded together x beats/sec are hearted and frequency of A is n. Now when one prong of B is loaded with a little wax, the number of beats per second decreases. The frequency of fork B is:
1)n+x. 2)n-x.
3)n-x². 4)n-2x

Pls answer it with the reason​

Answer 1

Answer:

nB-nA = x

nB-n= x( here beat frequency x is decreasing means either nB is decrease or n is increased but )

nB= n+x