Question

Is the following sentence true or false? The apparent change in the

frequency and wavelength of a wave as it moves toward or away from an
observed is know as the Doppler effect.

True or False

Answer 1

True

Step-by-step explanation:

Doppler's effect is the apparent change in the wavelength and frequency of a wave as it moves towards or away from an observer.

• The relative motion between the observer and the source causes changes to the wavelength and frequency.
• This effect is the doppler's effect.
• When a source moves closer, the frequency of the wave increases.
• For example, we see that effect of water ripples when a stone is dropped in still water.