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Physics · 2023 · 2 marks
CBSE 2023 · Region 3 · Set 1 · Q21
(a) State Huygens' principle. How did Huygens explain the absence of the backwave?
(a)
State Huygens' principle. How did Huygens explain the absence of the backwave?
OR
(b)
Use Huygens' principle to show reflection/refraction of a plane wave by (i) concave mirror, and (ii) a convex lens.
Marking-scheme solution
(a)
Statement: Each point of the wavefront is the source of secondary disturbance in all directions.
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CBSE Class 12 Physics past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.