Question

An aeroplane of frequency f is moving towards a
stationary abserver. Frequency heard by observer
is 3f then find out ratio of speed of aeroplane and
sound.
2
1
(3)
(4)
min
(2)
(1)
3
3
4​

Answer 1

Answer:

such cdthvstn to. c

heartfell sorry for that but I collect points to ask questions

Answer 2

Answer:

thanks for free point friend