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  • Define the term wavefront. state Huygen's principle. Consider a plane wavefront incident on a thin convex lens. Draw proper diagram to show how the incident wavefront traverses through the lens and after refraction on the focal point of the

Define the term wavefront. state Huygen's principle.
Consider a plane wavefront incident on a thin convex lens. Draw proper diagram to show how the incident wavefront traverses through the lens and after refraction on the focal point of the lens, giving the shape of the emergent wavefront.

 

 

 

 
 
 
 
 

Answers (1)

wavefront is the locus of the points oscillating in phase.that is wavefront is defined as the surface of constant phase.
Huygen's principle
Huygen's principle state that each point of a wavefront is a source for secondary disturbance the wavelets emanating from these points spread out in all direction with the speed of the wave. These emanating waves are known as secondary wavelets and if a tangent is drawn to these spheres the new position of the wavefront is obtained at a time t

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