(a) Light traveling from water into air possible not possible (b) Light travelin

Question

(a) Light traveling from water into air

possible

not possible    

(b) Light traveling from air into water

possible

not possible    

(c) Light traveling from glass into water

possible

not possible    

(d) Light traveling from water into diamond

possible

not possible    

(e) Light traveling from benzene into quartz

possible

not possible    

In which of the following cases is it possible to have total internal reflection? (a) Light traveling from water into air possible not possible (b) Light traveling from air into water possible not possible (c) Light traveling from glass into water possible not possible (d) Light traveling from water into diamond possible not possible (e) Light traveling from benzene into quartz possible not possible

Explanation / Answer

Let us denote the refractive index of ith medium as ni. For light travelling from ith medium to jth medium total internal reflection is only possible if ni is greater than nj.

a) Possible as nwater is greater than nair.

b) Not possible.

c) Possible.

d) Not Possible.

e) Possible.

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