The two headlights of a car are separated by 1.8 m. You are an observer equipped with an infra-red detector sensitive to radiation of wavelength 895 nm. What is the aperture diameter in your detector if it can just resolve the two headlights at a distance of 9 km? a) 5.4 mm b) 9.8 mm                         c) 4.9 mm                             d) none of these.

Q: Light of wavelength 600 nm is used to illuminate a single 25 um wide. If a screen is placed 1.5 m…

A: Given: Light wavelength, λ=600 nm=600×10-9 m Single slit width, d=25 μm=25×10-6 m Screen separation,…

Q: 35.10 What is the diffraction limited an- gular resolution for the following optical systems for…

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Q: In an interference experiment using a monochromatic source emitting light of wavelength à = 600 nm,…

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Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.