In a two-slit interference experiment, the slits are 0.200 mm apart, and the screen is at a distance of 1.00 m. The third bright fringe is found at 9.49 mm from the central fringe. Find wavelength of the light used.

Ans: 6.33 × 10^-7m 

In a Young's slits experiment, the separation of four bright fringes is 2.5 mm when the wavelength used is 6.2 × 10^-7m. The distance from the slits to the screen is 0.80m. Calculate the separation of the two slits.

Ans: 0.794 mm

Two coherent sources A and B of radio waves are 5m apart. Each source emits waves with a wavelength of 6m. Consider points along the line between two sources, at what distances, if any, from A is the interference, constructive.

Ans: 2.5 m

In Young's double slit experiment, the slits are 0.03 cm apart and the screen is placed 1.5 m away. The distance between the central bright fringe and fourth bright fringe is 1 cm. Calculate the wavelength of light used.

Ans: 5 × 10^-7 m

The separation between the consecutive dark fringes in a Young's double slit experiment is 1 mm. The screen is placed at a distance of 2 m from the slits 1.0 mm separation. What is the wavelength of light used in the experiment?

Ans: 5 x 10^-7

In Young's double slit experiment, the separation of four bright fringes is 2.5 mm. The wavelength of light used is 6.2 × 10^-5 cm and the distance from the slits to the screen is 80 cm. Calculate the separation of slits.

Ans: 0.794 mm.

The distance between two coherent sources in Young's double slit experiment is 0.3 mm and the interference pattern is observed on a screen 60 cm from the sources. If the wavelength of light used is 6 x 10^-7 m, calculate the fringe width of the interference pattern.

Ans: 1.0 × 10^-3 m

In Young's experiment two slits spaced 0.45 mm apart are placed 75 cm from a screen. What is the distance between second and third dark lines in the interference pattern on a screen when slits are illuminated with light of 500nm?

Ans: 0.83 × 10^-3 m

In a Young's slits experiment the separation of first to fifth fringes is 2.5 mm when the wavelength used is 620 nm. The distance from the slits to the screen is 80 cm. Calculate the separation of two slits.

Ans: 7.9 × 10^-4