Question

In a radio receiver, the short wave and medium wave station are tuned by using the same capacitoer butcoils of different inductance `L_(s)` and `L_(m)` respectively then
A. `L_(S) gt L_(m)`
B. `L_(S) =L_(m)`
C. `L_(S) lt L_(m)`
D. none

Answer 1

Correct Answer - C
`f=(c)/(lamda)impliesf_(m)=(c)/(lamda_(m))&f_(S)=(c)/(lamda_(S))`
`becauselamda_(m) gt lamda_(S)impliesf_(m)ltf_(S)`
`f_(m)=(1)/(2pisqrt(L_(m)c))&f_(S)=(1)/(2pisqrt(L_(m)c))`
`impliesL_(S)ltL_(m)`