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Consider a tank made of glass (reiractive index 1.5) with a thick bottom.  It is filled with a liquid of refractive index ., A student finds that, irrespective of what the incident angle i(see figure0 is for a beam of light entering the liquid, is never reflected from the liquid glass interface happen, the minimum value of  is:

a.

 

b.

 

c.

 

d.

 



Question ID - 50056 | SaraNextGen Top Answer

Consider a tank made of glass (reiractive index 1.5) with a thick bottom.  It is filled with a liquid of refractive index ., A student finds that, irrespective of what the incident angle i(see figure0 is for a beam of light entering the liquid, is never reflected from the liquid glass interface happen, the minimum value of  is:

a.

 

b.

 

c.

 

d.

 

1 Answer
127 votes
Answer Key / Explanation : (a) -

c < ib

 Here ib is “brewester angle”

 And c is critical angle

sinc+sinib                       

Since tan ib= =

<                              sin ib=

 < 1.5

 2+(1.5)2< ( 1.5)2

 <

Slab =1.5

127 votes


127