Question

What is meant by wavefront? What is the shape of the wavefront of a beam of parallel rays?

Answer 1

wavefront, noun,

surface containing points affected in same way by wave at given time

shape of the wavefront of the beam is - PLNAR.

Answer 2

$\textbf{Hey}$!!!

The locus of all the particles of the medium , which at any instant are vibrating in the same phase, $\textbf{is called the wavefront}$.

Corresponding to a beam of parallel rays of light, the wavefront is plane in shape.

Be Brainly.

@karangrover12.