Light of wavelength 620 n m falls on a slit that is 3.50×10 3 m m wide. Part A H

Question

Light of wavelength 620 nm falls on a slit that is 3.50×103mm wide. Part A How far is the first bright diffraction fringe from the strong central maximum if the screen is 11.5 m away. Express your answer to three significant figures and include the appropriate units.
Light of wavelength 620 nm falls on a slit that is 3.50×103mm wide. Part A How far is the first bright diffraction fringe from the strong central maximum if the screen is 11.5 m away. Express your answer to three significant figures and include the appropriate units.
Light of wavelength 620 nm falls on a slit that is 3.50×103mm wide. Part A How far is the first bright diffraction fringe from the strong central maximum if the screen is 11.5 m away. Express your answer to three significant figures and include the appropriate units. Light of wavelength 620 nm falls on a slit that is 3.50×103mm wide. Light of wavelength 620 nm falls on a slit that is 3.50×103mm wide. Light of wavelength 620 nm falls on a slit that is 3.50×103mm wide. Part A How far is the first bright diffraction fringe from the strong central maximum if the screen is 11.5 m away. Express your answer to three significant figures and include the appropriate units. Part A How far is the first bright diffraction fringe from the strong central maximum if the screen is 11.5 m away. Express your answer to three significant figures and include the appropriate units. Part A How far is the first bright diffraction fringe from the strong central maximum if the screen is 11.5 m away. Express your answer to three significant figures and include the appropriate units.

Explanation / Answer

The first bright fringe occurs in the direction , satisfying

sin = /w = (620*10^-9) / (3.5*10^-6) = 0.177

As we know that   sin for << 1

=> = 0.177 radians

The distance of the bright fringe from the center is thus:

d = D* = (11.5)*(0.177) = 2.035 m

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