A
ray
of light falls on the surface of a spherical glass sphere making an angle
'a' with the normal and is refracted in the medium at an angle B. The angle
of deviation of emergent ray from the direction of incident ray is
(1) (a-B)
(2) 2(a-B)(a-6)
(4) (a +B)2
(3)
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A ray of light falls on the surface of a spherical glass paper weight making an anglewith the normal and is refracted in the medium at an angle. The angle of deviation of the emergent ray from the direction of the incident ray is :
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