wave_mechanics progressive_waves Question 7
Question: The equation of a progressive wave is given by $ y=a\sin (628t-31.4x) $ If the distances are expressed in cms and time in seconds, then the wave velocity will be
[DPMT 1999]
Options:
A) 314 cm/sec
B) 628 cm/sec
C) 20 cm/sec
D) 400 cm/sec
Show Answer
Answer:
Correct Answer: C
Solution:
$ v=\frac{\text{Co-efficient of }t}{\text{Co-efficient of }x} $
$ =\frac{628}{31.4}=20cm/sec $
BETA
