Question

The time lag between two particles vibraing in a progressive wave separated by a distance 20m is 0.02s . the wave velocity if the frequency of the wave is 500Hz. Is

• A. 1000$m{s}^{-1}$
• B. 500$m{s}^{-1}$
• C. 2000$m{s}^{-1}$
• D. 250$m{s}^{-1}$

Answer 1

Answer: (A)

1000$m{s}^{-1}$

Distance between two particles vibrating in a wave $=20m$

Time lag $=0.02sec$

Velocity is given by, $v=\frac{distance}{time}=\frac{20}{0.02}=1000m/s$