JEE Class main Answered
solve the paragraph question given below
Asked by sarveshvibrantacademy | 29 Apr, 2019, 10:44: AM
Expert Answer
Hemisphere is acting like a plano-convex lens, its focal length can be obtained from lens makers formula as, (1/f) = (2-1) (1/R)
Hence focal length f = R
q.32 :- virtual image will be formed when object distance is less than focal length.
Hence if object distanceis R/2 , we get virtual image
q.33 :- if object distance is 2R, i.e. twice of focal length, we get image at distance 2R on other side.
Nature of image is real, inverted and same size
q.34:- if lightray making grazing incidence (i=90°) at spherical surfae , then light ray is acting as tangent to hemisphere,
Such a light ray will not pass through hemisphere
Answered by Thiyagarajan K | 29 Apr, 2019, 04:32: PM
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