In a prism of angle A, the condition for no emergence of light is :–
In a prism of angle A, the condition for no emergence of light is :–
(a) μ>cosec(A/2)
(b) μ> sin(A/2)
(c) μ>cos(A/2)
(d) μ>cos A
(μ = refractive index of material of prism)
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