An isosceles trapezium of reflecting material of refractive index `sqrt 2` and dimension of
Channel: Doubtnut
Date: 2020-01-26

An isosceles trapezium of reflecting material of refractive index `sqrt 2` and dimension of sides being 5cm, 5cm, 10cm and 5 cm. The angle of minimum deviation by this when light is incident from air and emerges in air is: