Question

Spherical wavefronts, emanating from a point source, Strike a plane reflecting surface. What will happen to these wave fronts, immediately after reflection ?

• A. They will remain spherical with the same curvature, both in magnitude and sign.
• B. They will become plane wave fronts.
• C. They will remain spherical, with the same curvature, but sign of curvature reversed.
• D. They will remain spherical, but with different curvature, both in magnitude and sign.

Answer 1

The correct option is C They will remain spherical, with the same curvature, but sign of curvature reversed.

The wavefront will remain to be spherical after reflection from the surface but their direction of propagation will be revered.