Question

fa) Wavelength
5. A person rings a metallic bell near as
concrete wall. He hears the echo after
0.3 s. If the sound moves with a speed
340 m/s. The wall is far from him?
(c) Frequency
(a) 102 m
(b) 11 m
(c) 51 m
es are similar to th
(d) 3​

Answer 1

Answer:

c ) 51 m

answer of this question

Answer 2

what I am in class 7. pls ask questions related to class 7.