When beats are formed by two waves of frequencies n_(1) and n_(2) the amplitude varies with frequency equal to

When beats are formed by two waves of frequencies n_(1) and n_(2) the

1.	When beats are formed by two waves of frequencies n_(1) and n_(2) the amplitude varies with frequency equal to
Answer» `n_(1)-n_(2)` `2(n_(1)-n_(2))` `(n_(1)-n_(2))2` `(n_(1)+n_(2))2` ANSWER :C