Question

enlively and answer any five questions.)
iron? A
1.
3.
Temperature of air 30°C
15 m
A person
Reflector
A person starts running with velocity 20 ms away from the
reflector after producing a sound of wavelength 20 cm.
(a) What is simple harmonic motion?
1
(b) Write the difference between different types of wave.
2
(c) Establish the relationv = fa.
3
(d) Does the person 'A' hear the echo? Give your argument with
mathematical explanation.
4​

Answer 1

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