Double-Slit Interference: Light from a Monochromatic Source Shines Through a Double

question 32

Multiple Choice

Double-slit interference: Light from a monochromatic source shines through a double slit onto a screen 5.00 m away. The slits are 0.180 mm apart. The dark bands on the screen are measured to be 1.70 cm apart. What is the wavelength of the incident light?

• A) 457 nm
• B) 306 nm
• C) 392 nm
• D) 612 nm
• E) 784 nm

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