Physics, asked by nammychauhan, 6 months ago

2. Huygen's conception of secondary waves
(1)Allow us to find the focal length of a thick lens
(2)Is a geometrical method to find a wavefront
(3) Is used to determine the velocity of light
(4)Is used to explain polarisation

Answers

Answered by saba12363

3

Answer:

2 is correct answer . By huygen's theory we can find the position of wave front.

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