IIT JEE , AIEEE Forum - Physics , Optics

amulye

a point source S is placed midway btw 2 converging mirrors having equal focal length f find d values of d fr which only 1 image is formed

a light ray falling at an angle of 45⁰

^{with d surface of a clean slab of ice of thickness 1m is refracted into it at an angle of}30^{0 calculate d time taken by d light rays to cross d slab speed of light in vacuum = 3 x 10^8m/s}

^{a vessel contains water upto a height of 20cm & above it an oil upto another 20 cm d}_{^1=1.332=1.30}

_{find d apperent depth of d vessel when viewed 4m above}

_{find d max angle of refractionwhen a light ray is refracted 4m d glass( =1.5)}

_{to air}

amulye

rates alloted fr dos who explain d answer

amulye

com on yar ne 1 plzzzzzzzzzzzzzz

rahul1993

the answer of the first question is d=2f=c and d=4f=2c

rahul1993

this is because first time when d=2focus=center of curvature, a light ray strikes mirror1 it goes parallel and after reflecting from mirror2 falls on its focus that is the common focus which is the place of the object and vice versa.

when d=4f=2c the light ray strikes mirror1and forms an inverted image at the common center of curvature (refer to ray diagrams for concave mirrors) and vice versa

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