3) A single slit forms a diffractionpattern with monochromatic light. The fourth

Question

3) A single slit forms a diffractionpattern with monochromatic light. The fourth minimum ofthe

pattern occurs at an angle of 25°from the central maximum. The angle at which the fifthminimum

of the pattern occurs is closestto:

3)

5) A light beam shines through a thinslit and illuminates a distant screen. The central bright fringeon

the screen is 1.00 cm wide, asmeasured between the dark fringes that border it on eitherside.

Which of the following actionswould decrease the width of the central bright fringe? (Theremay be

more than one correctchoice.)

5)

A) decrease the wavelength of thelight

B) increase the wavelength of thelight

C) increase the width of theslit

D) decrease the width of theslit

E) put the apparatus all underwater

Explanation / Answer

5) A light beam shines through a thinslit and illuminates a distant screen. The central bright fringeon

the screen is 1.00 cm wide, asmeasured between the dark fringes that border it on eitherside.

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