Question
Question: A wave equation which gives the displacement along Y-direction is given : y = 10<sup>–4</sup> sin (6...
A wave equation which gives the displacement along Y-direction is given : y = 10–4 sin (60t + 2x). where x and y are in metre and t in sec. Among the folLowing choose the correct statement :
A
It represents a wave propagating along positive x-axis with a velocity of 30 m/s.
B
It represents a wave propagating along negative x-axis with a velocity of 120 m/s.
C
It represents a wave propagating along negative x-axis with a velocity of 30 m/s.
D
It represents a wave propagating along negative x-axis with a velocity of 104 m/s.
Answer
It represents a wave propagating along negative x-axis with a velocity of 30 m/s.
Explanation
Solution
Wave is travelling along (–)ve x-axis, with speed, v = 
= 30 m/s