How is a wavefront defined? Using Huygens' prniciple draw a figure showing the propagation of a plane wave refracting at a plane surface separating two media. Hence verify Snell's law of refraction.

How is a wavefront defined? Using Huygens' prniciple draw a figure showing the propagation of a plane wave reflecting at the interface of the two media. Show that the angle of incidence is equal to the angle of reflection.

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

Using Huygens' principle and drawing the skteches of wavefront,show how a parallel beam of light is reflected from a polshed surface and hence verify that anglei=angler .

Explain the phenomenon of refraction at a plane surface separating two transparent media and show that mu=c//v where letters have their usual meanings.

Using Huygen's principle and drawing the sketches of wavefronts,show how a parallel beam of ligth is refrated from the surface of separation of a rarer medium to a denser medium .Verify Snell's law.

State Huygen's principle of propagation of light and prove the laws (Snell's law) of refraction on its basis.

Explain the phenomenon of refraction at a plane surface seperating two transparent media and show that mu_ = c//v , where letters have their usual meanings.

Verify Snell's law of refraction when a plane wavefront is propagating from denser to a rarer medium.

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

Fig.2.100 shows a convex spherical surface with centre of curature C,separating the two media of refractive indices mu_1 and mu_2 . . Draw a ray diagram showing the formation of imge of a point object O lying on the principal axis.Derive the relationship between the object and image distances in terms of the refractie indices of the wo media and the radius of curvature R of the surface.