Question

Two identical narrow slits s1 and s2 are illuminated

Answer 1

when two identical narrow slits S1 and S2 are illuminated then young"s double slit experiment occur .this is also called interference of light.these two identical slits are called cohrent source if they aren't cohrent then this process don't occur and we don't get any pattern.

Answer 2

if two slits s1 and s2 have much less distance than the distance at which screen is placed. then we will observe a band of interference on the screen .


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