KCET2012PhysicsOscillations
Which of the following expressions represents a simple harmonic progressive wave ?
Options
- Ay = a sin ω t
- By = a sin ω t cos k x
- Cy = a sin ( ω t - k x )
- Dy = a cos k x
Correct answer
C. y = a sin ( ω t - k x )
Step-by-step solution
A wave propagates then only disturbance travels and no material of the medium is permanently displaced. A harmonic wave is a sinusoidal wave. it can be written as sine or cosine function.sine or cosine term should be in both x and t .