Question

A wave of frequency 250 Hz is produced in
an iron rod in which its velocity is 4800 m/s.
Now, it passes into air in which velocity is
332 m/s. Its wavelength in iron will be
(1) 4800 < (332/250) m.
(2) (4800/250) m.
(3) (332/250) m.
(4) 4800 / (332x250) m.​

Answer 1

Answer:

332/250 because it the friction in air is less then in solids