STANDARD Physics Harmonic Waves MCQ Question
A transverse harmonic wave on a string is described by y(x,t) = 3sin(36t + 0.018x + \frac{}{4}) where x and y are in cm and t is in s. Which of the following statements is incorrect?
The wave is travelling in negative x-direction.
The amplitude of the wave is 3 cm.
The angular frequency of the wave is 36 rad/s.
The wave number is 0.018 c.
Correct Answer
Detailed Explanation
The wave equation y(x,t) = 3sin(36t + 0.018x + \frac{}{4}) indicates that the wave is travelling in the negative x-direction, and the amplitude is 3 cm. The angular frequency is 36 rad/s. However, the wave number should be 0.018 rad/cm, not c.
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