Light emerges out of a convex lens when a source of light kept at its focus. The shape of wavefront

Question

Light emerges out of a convex lens when a source of light kept at its focus. The shape of wavefront of the light is\

Professor PC Thomas Classes · Answer

(a) : The shape of the wavefront when light emerges out of a convex lens when a point source is placed at its focus is plane wavefront.\ Plane wave Front\ So, option (a) is correct.\