Kelvi

In a double slit experiment, when light of wavelength $400$ nm was used, the angular width of the first minima formed on a screen placed $1$ m away, was found to be $0.2^\circ.$ What will be the angular width of the first minima, if the entire experimental apparatus is immersed in water? $\mu_{water} = \frac{4}{3}$

medium

Wave Optics

2019

physics

$0.266^\circ$

$0.15^\circ$

$0.05^\circ$

Explanation

To solve this problem, we need to understand how the immersion in water affects the angular width of the first minima in a double slit experiment. $\\$ The angular position of the first minima in a double slit experiment is given by: $\\ \theta = \frac{\lambda}{d} \\$ where $\lambda$

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