Sketch the emergent wavefront.

Define the term 'wavefront'.

Sketch the wavefronts corresponding to converging rays.

Sketch the wavefronts corresponding to diverging rays.

A plane wavefront is incident on a prism.Draw the shjape of the refracted wavefront.

Draw a diagram to show the refraction of a plane wavefront incident on a convex lens and hence draw the refacted wavefront.

Sketch the different types of racemose inflorescene.

What is wavefront?

State the principle,which helps us to determine the shape of the wavefront at a later time from its given shape at any time.Apply this principle to Derive Snell's law of refraction by drwing the refracted wavefront corresponing to a plane wavefront incident on the boundary separating a rarer medium from a denser medium.