A prism of angle 75° and refractive index √3 is coated with a thin film of refractive index 1.5 only at the back exit surface. To achieve total internal reflection at this back exit surface, the incident angle (i) must satisfy which condition? (Given: sin 15° = 0.25 and sin 25° = 0.43)

What are the characteristics of an image formed by a plane mirror?

Given below are two statements: an Assertion [As] and a Reason [R]. Assertion [As]: A convex mirror cannot form real images of real objects. Reason [R]: Convex mirrors converge the parallel rays of light that are incident on them. Choose the correct alternative: