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 the mid 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 the mid point of the vessel. Determine the radius to depth ratio of the vessel
Answer» `1/2sqrt((1-mu^2)/(mu^2 + 1))` `1/2 SQRT((4-mu^2)/(mu^2 - 1))` `1/2 sqrt((4+mu^2)/(mu^2 + 1))` `1/2 sqrt((4+mu)/(mu+1))` ANSWER :B

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