A prism is made up of a material of refractive index 3. The angle of the prism is A0. If the angle of minimum deviation is equal to the angle of the prism, then the value of A is :
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a
300
b
450
c
600
d
750
answer is C.
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Detailed Solution
Given. μ=3,δm=Aμ=sin(A+δm2)sinA2or 3=sin(A+A2)sinA2=sinAsinA2=2sinA2cosA2sinA2=2cosA2∴ cosA2=32=cos300 or , A=600
A prism is made up of a material of refractive index 3. The angle of the prism is A0. If the angle of minimum deviation is equal to the angle of the prism, then the value of A is :