Wave Optics Mock Tests

In Young's double-slit experiment, the fringe width is β. If the entire setup is immersed in a liquid of refractive index μ, the new fringe width becomes:

In Young's double slit experiment, light of wavelength 600 nm produces fringes of width 2 mm. The fringe width when the wavelength is changed to 400 nm will be:

In Young's double slit experiment, the intensity at a point where the path difference is λ is I. The intensity at a point where the path difference is λ/3 is:

Light of wavelength 600 nm is incident on a single slit of width 0.1 mm. The angle to the first minimum is approximately

In Young's double slit experiment, the two slits are separated by 0.5 mm and the screen is placed at a distance of 1.5 m from the slits. Light of wavelength 500 nm is used. The distance between the third bright fringe and the second bright fringe is:

A wave is described by y = 0.02 sin(20x − 400t). The speed of the wave is:

In Young's double slit experiment, the fringe width is β. If the entire setup is immersed in a liquid of refractive index 1.5, the new fringe width becomes:

In a double-slit experiment, the fringe width is 0.5 mm. If the wavelength is doubled and the slit separation is halved, the new fringe width is: