In a radio receiver, the short wave and medium wave stations are tuned by using the same capacitor but coils of different inductance Ls and Lm respectively then
As v = cλ⇒vm=cλm and vs=cλs
∵λm>λs⇒vm<vs
Also vm=12π√LmC and vs=12π√LsC
⇒vmvs=√LsLm⇒Ls<Lm.