Question

How does a ray of light bend when it ravels from: 

(i) Rarer to denser medium. 

(ii) Denser to rarer medium. 

(iii) When it is normal to the interface of the two media.

Answer 1

(i) When a ray of light travels from rarer to denser medium it bends towards the normal. 

(ii) When a ray of light travels from denser to rarer medium it bends away from the normal. 

(iii) The ray goes straight into second medium without any bending.