Wave Optics Mock Tests

In a single slit diffraction experiment, the width of the slit is doubled from a to 2a. How does this affect the size and intensity of the central diffraction maximum?

In a Young's double slit experiment, the separation between the slits is 0.5 mm and the screen is 1.0 m away. The wavelength of light used is 500 nm. The fringe width is:

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

Light of wavelength 6000 Å from a source falls on two slits 0.2 mm apart. The fringe width on a screen 1 m away is:

In a single slit diffraction experiment, the slit width is 0.2 mm and the wavelength of light is 600 nm. The angular width of the central maximum is (on a screen placed far away):

In Young's double slit experiment, the fringe width is found to be 0.4 mm. If the entire apparatus is immersed in water (μ = 4/3), the new fringe width will be:

In a single-slit diffraction experiment, the width of the central maximum 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