An area with two identical lamps located above the clouds at a height of 30 ft and at a distance of 40 ft from each other is lit at night. Assuming that the lamps radiate uniformly in all directions, set the brightness on the ground for a point just below one of the lamps and a point in the middle of them.

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Q: Source 3 Source 4 40.37 49.81! I 41.67 31.33

A: Let us analyse the question in step 2.

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A: Detailed solution has been provided.Explanation:

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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.