Question

b. The law applicable for determining the apparent change in freq
when a source and an observer are in motion is :
(1) Newton's law
(2) Galileo's law
(3) Huygen's law
(4) Doppler's law

​

Answer 1

The law applicable for determining the apparent change in freq

when a source and an observer are in motion is :

(1) Newton's law

(2) Galileo's law

(3) Huygen's law

(4) Doppler's law

Answer:- Doppler's Law

Answer 2

the answer of this question is 4