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
Verified Correct Answer: D.
Physical Principles & Numerical Solution
λ = 2 x 50 = 100cm = 1m.
V = fλ, f = v/λ = 300.
Source: Myschool Past Questions Archive (Record #23924)