Geometrical OpticsHard
Question
For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must bemade of a material whose refractive index
Options
A.is greater than 2
B.lies between √2 and 1
C.lies between 2 and √2
D.is less than 1
Solution
δm = A⇒ μ = 2 cos
For δm = A
Hence, μ lies between 2 and √2
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