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

State Snell's law of refraction of light.

When does snell's law in refraction fails?

When does Snell’s law in refraction fail ?

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.

Define Snell's law. What is refractive index? Write its mathematical formula.

Can total inrternal reflection take place,when light travesl from rarer to denser medium?