Questions
Light reaches at a point P via two different paths(i) Direct (ii) After reflection from a plane mirror. Path difference between the two path is , then the intensity at point P in terms of intensity due to source of light (I) is
detailed solution
Correct option is D
Optical path difference when light directly comes = 5λ2Path difference when light comes after reflection =5λ2+λ2=6λ2⇒even multiple of λ2 so phase difference is 0 or 2πIR=4Icos2ϕ2, IR=4ITalk to our academic expert!
Similar Questions
In Young's double slit experiment intensity of light emerging from each slit is I0. Wavelength of light used is , separation between the slits is d and separation between the slits and screen is D. P is a point on the screen where the resultant intensity is 3I0. Then the minimum path difference between rays emerging from the slits at point P is
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