A passenger is sitting in a train which is moving fast. The engine of the train blows a whistle of frequency…
A passenger is sitting in a train which is moving fast. The engine of the train blows a whistle of frequency ' $n$ '. If the apparent frequency of sound heard by the passenger is ' $f$ ' then
$\mathrm{f}=\mathrm{n}$
$\mathrm{f}>\mathrm{n}$
f $ < $ n
$\mathrm{f} \leq \mathrm{n}$
Solution
There is no relative motion between source and listener.
$\therefore \quad \mathrm{f}=\mathrm{n}$