One side of radius of curvature R2 = 120 cm of a convex lens of material of refractive index μ = 1.5 and focal length f1 = 40 cm is silvered. It is placed on a horizontal surface with silvered surface in contact with it. Another convex lens of focal length f2 = 20 cm is fixed coaxially d = 10 cm above the first lens. A luminous object O on the axis gives rise to an image coincident with it. Find its height above the upper lens.
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1 Answers
1see it too tedious for me to write so i am just giving u an expaination
first assume h and then from the unsilvered lens calculate v now for the silvered lens u can use lens fromula
first u hv to use the formula for refraction through the first side ... and then reflection from the 2nd part..... and again refraction from the 1st part..
then again u hv to use lens formula this time for the 2nd lens.......(which is unsilvered)
if u can get my hint work backwards
