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Question: An air bubble in a glass sphere(\(\mu\)=1.5 ) is situated at a distanced 3 cm form a convex surface ...

An air bubble in a glass sphere(μ\mu=1.5 ) is situated at a distanced 3 cm form a convex surface of diameter 10 cm. At what distance from the surface will the bubble appear?

A

2.5 cm

B

-2.5 m

C

5 m

D

-5 m

Answer

-2.5 m

Explanation

Solution

: Since refraction occurs from denser to rerer medium,

Therefore,

−32(−3)+1v=1−32−5=110- \frac { 3 } { 2 ( - 3 ) } + \frac { 1 } { v } = \frac { 1 - \frac { 3 } { 2 } } { - 5 } = \frac { 1 } { 10 } or

⇒v=−2.5 cm\Rightarrow \mathrm { v } = - 2.5 \mathrm {~cm}