An observer can see through a pin-hole the top end of a thin rod of height 
, placed as shown in the figure. The beaker height is 
and its radius 
. When the beaker is filled with a liquid up to a height 
, he can see the lower end of the rod. Then the refractive index of the liquid is
.png)
a)
5/2
b)
c)
d)
3/2
, placed as shown in the figure. The beaker height is and its radius . When the beaker is filled with a liquid up to a height , he can see the lower end of the rod. Then the refractive index of the liquid isa)
5/2
b)
c)
d)
3/2
Question ID - 152711 | SaraNextGen Top Answer An observer can see through a pin-hole the top end of a thin rod of height , placed as shown in the figure. The beaker height is and its radius . When the beaker is filled with a liquid up to a height , he can see the lower end of the rod. Then the refractive index of the liquid is
a)
5/2
b)
c)
d)
3/2
An observer can see through a pin-hole the top end of a thin rod of height , placed as shown in the figure. The beaker height is and its radius . When the beaker is filled with a liquid up to a height , he can see the lower end of the rod. Then the refractive index of the liquid is
|
a) |
5/2 |
b) |
|
c) |
|
d) |
3/2 |
1 Answer
127 votes
Answer Key / Explanation : (b) -
(b)
The line of sight of the observer remains constant making an angle of 
with the normal
.png)
127 votes
Answer Link
127