Light of Wavelength 450 Nm Is Incident on a Narrow

question 5

Multiple Choice

Light of wavelength 450 nm is incident on a narrow slit.The diffraction pattern is observed on a screen 5.0 m from the slit,and the central maximum is observed to have a width of 22 cm.What is the width of the slit?

• A)4.5 µm
• B)5.0 µm
• C)10 µm
• D)20 µm
• E)0.20 µm

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