A dot on a paper appears to be raised by 4cm when viewed normally through a glass slab placed on it. Calculate the thickness of the glass slab
A dot on a paper appears to be raised by 4 cm when viewed normally through a glass slab placed on it. Calculate the thickness of the glass slab if it's refractive index is 1.5
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We know that the Refractive index = real depth/apparent depth = 1.5
Let the thickness of the glass slab be x
real depth is x cm.
so apparent depth = (x-4) cm.
real depth = 1.5 * apparent depth
x = 1.5*(x-4)
0.5x = 6
x = 6/0.5 = 12
So, Thickness of glass is 12 cm
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