A string is stretched between two points 50cm apart. It is then plucked at its center and the velocity of the wave produced is 300m/s. Calculate the number of vibrations made by the string in 1s.
-
A.
3 -
B.
6 -
C.
150 -
D.
300 -
E.
600
Correct Answer: Option D
Explanation
λ = 2 x 50 = 100cm = 1m.
V = fλ, f = v/λ = 300.