Wave Mechanics Question 714
Question: Two sinusoidal waves with same wavelengths and amplitudes travel in opposite directions along a string with a speed 10 ms?1. If the minimum time interval between two instants when the string is flat is 0.5 s, the wavelength of the waves is
[Roorkee 2000]
Options:
A) 25 m
B) 20 m
C) 15 m
D) 10 m
Show Answer
Answer:
Correct Answer: D
Solution:
Minimum time interval between two instants when the string is flat = $ \frac{T}{2}=0.5\sec \Rightarrow T=1\sec $ Hence $ \lambda =v\times T=10\times 1=10,m $ .
BETA
