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MHT CET Physics question

PhysicsWave OpticsMHT CET

A parallel beam of light of wavelength 3141.59 Å is incident on a small aperture. After passing through the aperture, the beam is no longer parallel but diverges at 1° to the incident direction. What is the diameter of the aperture?

Answer: (B)

Solution

For first diffraction minimum , so

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Question ID VK-077337