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.
- 3
- 6
- 150
-
300
- 600
The correct answer is: D
Explanation
λ = 2 x 50 = 100cm = 1m.V = fλ, f = v/λ = 300.