JEE PHYSICS MCQ: WAVE OPTICS

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In young's experiment a plate of thickness

\mathrm{t}

having refractive index

\mu

is placed infront of one slit. Find the minimum thickness of plate which will make the intensity at centre of the screen zero.

View answer and explanation

Correct option: C

\frac{\lambda}{2(\mu-1)}

Option C (

\frac{\lambda}{2(\mu-1)}

) is correct because the minimum thickness for destructive interference at the center is when the path difference introduced by the plate is half a wavelength.

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