When a wave travelling in a medium is reflect | vedclass

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(D) When a wave is reflected from the boundary of a denser medium,the wave undergoes a phase change of $\pi$ radians $(180^\circ)$.Because the medium

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Wavelength

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(D) When a wave is reflected from the boundary of a denser medium,the wave undergoes a phase change of $\pi$ radians $(180^\circ)$.Because the medium remains the same,the speed of the wave $(v = f \lambda)$ does not change.Since the frequency $(f)$ is determined by the source,it remains constant.Consequently,the wavelength $(\lambda = v/f)$ also remains unchanged.However,some energy is transmitted into the denser medium,which causes the amplitude and intensity of the reflected wave to decrease.Therefore,the wavelength is the quantity that does not change.

When a wave travelling in a medium is reflected from the boundary of a denser medium,which of the following will not change?

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