Embibe Experts Solutions for Exercise 1: ICSE-2020

In Young’s double slit experiment, show graphically how intensity of light varies with distance.

 In Fraunhofer diffraction, how is the angular width of the central bright fringe affected when slit separation is increased ?

What should be the path difference between two waves reaching a point for obtaining constructive interference in Young$\text{'}$s Double Slit experiment?

Draw a neat labelled diagram of Young$\text{'}$s Double Slit experiment. Show that $\beta =\frac{\lambda }{\alpha }$, where the terms have their usual meaning $($either for bright or dark fringe$)$.

In Young's double-slit experiment, the screen is kept at a distance of $1.2 \mathrm{m}$ from the plane of the slits. The two slits are separated by $5 \mathrm{mm}$ and illuminated with monochromatic light having wavelength $600 \mathrm{nm}$. Calculate the fringe width i.e. fringe separation of the interference pattern.

In Young's double-slit experiment, the screen is kept at a distance of $1.2 \mathrm{m}$ from the plane of the slits. The two slits are separated by $5 \mathrm{mm}$ and illuminated with monochromatic light having wavelength $600 \mathrm{nm}$. Calculate the distance of ${10}^{th}$ bright fringe from the centre of the pattern.

Draw a labelled graph of the intensity of diffracted light $\left(I\right)$ versus angle$\left(\theta \right)$ in the Fraunhofer diffraction experiment for a single-slit diffraction.