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An air bubble in a glass sphere (mu = 1....

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

A

2.5 cm

B

2 cm

C

3 cm

D

4 cm

Text Solution

Verified by Experts

The correct Answer is:
A
`(mu_(2))/(v)-(mu_(1))/(u)=(mu_(2)-mu_(1))/(R )`
`mu_(1) =1.5, mu_(2)=1, R=-5, u=-3 cm `
`(1)/(v) -((1.5))/(-3)=(1-1.5)/(-5) rArr v=-2.5 cm`
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