Obtain an expression for the aparent frequency of sound when the source of sound and the listener are movingtowards each other.

Obtain an expression for the aparent frequency of sound when the sourc

1.	Obtain an expression for the aparent frequency of sound when the source of sound and the listener are movingtowards each other.
Answer» SOLUTION :For a source moving towards an observer ( assumed to be at REST), apparent frequency `f' = f_(0)((v)/( v-v_(s)))` thereby wavelength `lambda == ( v- v_(s))/( f_(0))` For an observer moving towards the source, apparent frequency, `f' = (v+ v_(0))/( lambda ) `i.e, `f' = v_(0) ((v+v_(0))/(v-v_(s)))` Note `:` For `v_(0) LT lt v` and `v_(s)lt lt v`, `f' = f_(0) ((v+v_(0))/(v-v_(s)))`