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JEE PHYSICS MCQ: WAVE OPTICS

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Two waves are represented by the equations

{y_1} = a\sin \omega t,\;and\;{y_2} = a\cos \omega t

. The first wave

View answer and explanation

Correct option: D

Lags the second by

{\frac{\pi }{2}}

Option D (Lags the second by

{\frac{\pi }{2}}

) is correct because

{y_1}

can be expressed as a sine function, while

{y_2}

is a cosine function, which is a sine function leading by

{\frac{\pi }{2}}

.

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