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+1 vote
47.8k views
in Physics by (138k points)

Huygens' principle of secondary wavelets may be used to
(a) find the velocity of light in vacuum
(b) explain the particle behaviour of light
(c) find the new position of a wavefront
(d) explain Snell's law.

1 Answer

+1 vote
by (144k points)
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Best answer

(c) find the new position of a wavefront

(d) explain Snell's law.

EXPLANATION:   

The Huygen's principle of secondary wavelets says that the points of a wavefront act as secondary sources of light emitting secondary wavelets. The line joining the points on the secondary wavelets that are in the same phase gives the new position of a wavefront. Hence the option (c) is true.         

It can also be used to explain the Snell's law. Hence the option (d) is true.   Options (a) and (b) are not true.

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