When there is a relative motion of an observer from a source of light, the apparent change in its wavelength is termed as

(A): Apparent frequency is equal to actual frequency when there is no relative motion between source and observer. (R): When there is no relative motion between the source and observer the velocity of sound is zero

(A): Apparent frequency is equal to actual frequency when there is no relative motion between source and observer. (R): When there is no relative motion between the source and observer the velocity of sound is zero

When an observer moves away from a stationary source of sound, the apparent pitch will

(A) : When a source moves towards a stationary observer, the speed of source relative to the observer remains unchanged. (R): The apparent change in frequency is due to change in the wavelength brought by the motion of the source.

(A) : When a source moves towards a stationary observer, the speed of source relative to the observer remains unchanged. (R): The apparent change in frequency is due to change in the wavelength brought by the motion of the source.

A source producing sound of frequency 340 Hz is moving away from a stationary observer with a velocity of 34 ms^(-1) . The apparent change in wavelength of sound heard by the observer is (V = 340 ms^(-1))