Question

a convex lens made of marrtial of refractive index n2 is kept a medium of refractive indexn1.A parallel beam of light is incident on the lens.Compare the path of rays of light emerging from the convex lens if (a)n1<n2.(b)n1=n2,(c)n1>n2​

Answer 1

A concave lens made of a material of refractive index n1 is kept in a medium of refractive index n2. A parallel beam of light is incident on the lens. Trace the path of rays of light parallel to principal axis incident on the concave lens after refraction when

(i) n1 > n2 = n2 (ii) n1 = n2

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