Q. 24.5( 37 Votes )

What is the shape

Answer :

Wave-front :


The locus of all the particles of the medium vibrating in the same phase at a given instant is called wave-front.


(a) In case of light diverging from a point source, the shape of wave-front is a circle



Figure of wave-front formed by a point source


(b) In case of light emerging out of a convex lens when a point source is placed at its focus, the wave-front is a parallel grid.



Fig: Light rays passing through a convex lens



Figure of wave-front formed by a convex lens when point source is at its focus


(c) When light source is a distance star intercepted by earth, the wave-front formed is a plane


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

<span lang="EN-USPhysics - Exemplar

Define the term wPhysics - Board Papers

(i) State and expPhysics - Exemplar

<span lang="EN-USPhysics - Exemplar

Consider a point Physics - Exemplar

Consider a ray ofPhysics - Exemplar