Question

The photograph below shows the pattern created on a distant screen when light from a laser is incident on two identical slits separated by a distance d. Pattern on screen with two slits A third slit of equal width is uncovered a distance2 d to the right of the right slit, as shown in the magnified view below. After the third slit is opened:

Answer 1

(Only take into account interference between light reflected from the upper plate's upper surface and light reflected from its lower surface.)

CE On a faraway screen, a single-slit diffraction pattern develops. How much would the width of the centre bright spot on the screen change if light with a wavelength of 676 nm falls on a screen 1.85 m away through a slit that is 7.64 m wide and assumes that the angles involved are small? The screen's core bright fringe and the first bright fringe above it can be found by measuring the linear distance between them. If a piece of glass is placed in front of one of the openings and its thickness prevents light from passing.

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