A wavefront is……….of all the particales of a medium which are…………….. .

Options

A. a surface imagined parallel and coplanar with light rays
B. a surface around a source such that each point of it is at a constant distance from the source
C. a surface which contains the plane of oscillations of electric field of light
D. a surface which is created by medium particles oscillating in same phase

Answer

D

Explanation

A wavefront is locus of all the particles oscillating in same phase.