Question
A sound source emits waves of wavelength 60 cm. This source is moving towards north with a speed of 1/5th of the speed of sound. The apparent wavelengths
of the waves in the north and south directions of the moving source will be
(1) 72 cm, 48 cm
(2) 48 cm, 72 cm
(3) 60 cm, 75 cm
(4) 75 cm, 60 cm