Two slits are $1.0 \mathrm{mm}$ apart and placed at a distance of $1.0 \mathrm{m}$ from a screen. Find fringe-width when light of wavelength $500 \mathrm{nm}$ is used. What would be the fringe-width if the separation between the slits is halved and the distance of the screen from the slits is doubled?

A beam of monochromatic light of wavelength $500 \mathrm{nm}$ falls on two parallel slits. The distance between the slits is $0.15 \mathrm{mm}$. Determine the width of the interference fringes on a screen placed at a distance of $1.5 \mathrm{m}$ from the slits.

A double-slit is illuminated by light of wavelength $6000 \text{Å}$. The slits are $0.1 \mathrm{cm}$ apart and the screen is placed $1 \mathrm{m}$ away. Find the angular position of the 10th maximum in radian and the separation between two adjacent minima.

In Young’s double-slit experiment, the slits are separated by $0.24 \mathrm{mm}$. The screen is $1.2 \mathrm{m}$ away from the slits. The fringe-width is $0.3 \mathrm{cm}$. Find the wavelength of light used

In Young’s experiment, what will be the phase difference and the path difference between the light waves reaching the third bright fringe from the central fringe?

In Young’s experiment, what will be the phase difference and the path difference between the light waves reaching the third dark fringe from the central fringe?

The two slits in Young’s double-slit experiment are separated by a distance of $0.03 \mathrm{cm}$. When light of wavelength $5000 \text{Å}$ falls on the slits, an interference pattern is produced on a screen $1.5 \mathrm{m}$ away. Find the distance of 4th bright fringe from the central maximum.

In Young’s double-slit experiment, the slits are $0.2 \mathrm{mm}$ apart and the screen is $1.5 \mathrm{m}$ away. The distance between the central bright fringe and the fourth dark fringe is $1.8 \mathrm{cm}$. Find the wavelength of light used.

In Young’s double-slit experiment, light of wavelength $5000 \text{Å}$ is used. The third bright band on the screen is formed at a distance of $1 \mathrm{cm}$ from the central bright band. If the screen is at a distance of $1.5 \mathrm{m}$ from the centre of the two narrow slits, calculate the separation between the slits.