MHT CET 2024 Physics question

A wavefront is a surface

(A)perpendicular to the direction of propagation of lightCorrect
(B)parallel to the direction of propagation of light
(C)without any specific orientation with direction of propagation of light
(D)which has nothing to do with intensity of light

Answer: (A)

Solution

A wavefront is the locus of all points of a medium that vibrate in the same phase at a given instant. Rays are drawn along the direction of energy propagation, and in an isotropic medium the ray is always normal to the wavefront (as in Huygens' construction). So a wavefront

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Question ID VK-094967