Question
(a) A plane wavefront approaches a plane surface separating two media. If medium one is (optically) denser and medium two is optically rarer, construct the refracted wavefront using Huygen’s principle.
(b) Draw the shape of refracted wavefront when a plane wavefront is incident on (i) prism and (ii) convex mirror. Give a brief explanation for the construction.
Solution
(a) Construction of refracted wavefront.
(b)
i) When a plane wave is incident on the prism.
ii) When a plane wave is incident obn convex mirror.
Time taken by any disturbance to travel from incident wavefront to the refracted wavefront is same.
(b)
i) When a plane wave is incident on the prism.
ii) When a plane wave is incident obn convex mirror.
Time taken by any disturbance to travel from incident wavefront to the refracted wavefront is same.
