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An object lies in front of a thick parallel glass slab, the bottom of which is polished. If the distance between first two images formed by bottom surface is 4cm then find thickness of glass slab.(Assume n of glass=1.5 and paraxial rays)

Akira , 8 Years ago
Grade 12
anser 1 Answers
Vikas TU

Last Activity: 8 Years ago

Thickness of glass slab =?
Refractive index (n) = 1.5
Distance between two image = 4 cm
Refractive index = Distance /thickness
1.5 = 4/ thickness
Thickness = 40/15
                  = 2.67cm

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