Question

In a double-slit experiment, the second-order bright fringe is observed at an angle of 0.51°. If...

In a double-slit experiment, the second-order bright fringe is observed at an angle of 0.51°. If the slit separation is 0.11 mm, then what is the wavelength of the light?

_____???

Two narrow slits are illuminated by a laser with a wavelength of 514 nm. The interference pattern on a screen located x = 4.60 m away shows that the third-order bright fringe is located y = 9.00 cm away from the central bright fringe. Calculate the distance between the two slits.

_____???

The screen is now moved 1.1 m further away. What is the new distance between the central and the third-order bright fringe?

_____???

Help me please and show work! Thanks!

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