JEE Main & Advanced
Physics
Wave Mechanics
Question Bank
Progressive Waves
question_answer
The wave equation is \[y=0.30\sin (314t-1.57x)\] where t, x and y are in second, meter and centimeter respectively. The speed of the wave is [CPMT 1997; AFMC 1999; CPMT 2001]
A) 100 m/s
B) 200 m/s
C) 300 m/s
D) 400 m/s
Correct Answer:
B
Solution :
\[\omega =314\], \[k=1.57\] and \[v=\frac{\omega }{k}=\frac{314}{1.57}=200\]m/s.