The figure shows a Young's double slit experimental setup. It is observed that when a thin transparent sheet of thickness t and refractive index $\mu$ is put in front of one of the slits, the central maximum gets shifted by a distance equal to n fringe width. If the wavelength of light used is $\lambda$ then $t$ will be:

Question

The figure shows a Young's double slit experimental setup. It is observed that when a thin transparent sheet of thickness t and refractive index

\mu

is put in front of one of the slits, the central maximum gets shifted by a distance equal to n fringe width. If the wavelength of light used is

\lambda

then

t

will be:

Quantrex Academy · Accepted Answer

Correct answer: B. (nλ)/(( μ - 1 ))

Shift in central maxima = (D)/(a)(μ - 1)t Fringe width = (Dλ)/(a) It's given, (D)/(a)(μ - 1)t = n(Dλ)/(a) t = (nλ)/(μ - 1)

The figure shows a Young's double slit experimental setup. It is...