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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Two concave mirrors each of focal length 20 cm are placed such that their principal axes are parallel to each other and at a distance of 1 cm to each other. Both the mirrors are at a distance of 100 cm to each other.

Two concave mirrors each of focal length 20 cm are placed such that their principal axes are parallel to each other and at a distance of 1 cm to each other. Both the mirrors are at a distance of 100 cm to each other.

A = 4 Two thin prisms are combined to form an achromatic combination. For prism I μ′R = 1.7 μ′Y = 1.8 and μ′V = 1.9 . Find the prism angle of prism II and the net mean deviation. μR = 1.35 μv = 1.42 For prism II μY = 1.40