Question

what is doppler effect? can u explain by giving more details and by derivation.

Answer 1

the Doppler effect is the change in frequency or wavelength of a wave for an observer who is moving relative to the wave source. it is named after the Austrian physicist Christian Doppler ,who described the phenomenon in 1842.
the derivation of the Doppler effect equations is the most straight forward by starting with the derivation of the wavelength equations. frequency and velocity equations will then follow.
hope this helps u...