A person looking through a telescope focuses lens at a point on the edge of the bottom of an empty cylindrical vessel. Next he fills the entire vessel with a liquid of refractive index mu, without disturbing the telescope. Now, he observes themid point of the vessel. Determine the radius to depth ratio of the vessel.

A person looking through a telescope focuses lens at a point on the ed

1.	A person looking through a telescope focuses lens at a point on the edge of the bottom of an empty cylindrical vessel. Next he fills the entire vessel with a liquid of refractive index mu, without disturbing the telescope. Now, he observes themid point of the vessel. Determine the radius to depth ratio of the vessel.
Answer» `1/2sqrt((1-MU^(2))/(mu^(2)+1))` `1/2sqrt((4-mu^(2))/(mu^(2)-1))` `1/2sqrt((4+mu^(2))/(mu^(2)+1)` `1/2sqrt((4+mu)/(mu+1))` ANSWER :B

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