Two soap bubbles of radii 1 mm and 2 mm ...

Two soap bubbles of radii 1 mm and 2 mm merge isothermally . Then radius of the new bubble formed would be

A

3 mm

B

2/3 mm

C

3/2 mm

D

` sqrt(5)` mm

Text Solution

Verified by Experts

The correct Answer is:

D

` r = sqrt(r_(1)^(2)+r_(2)^(2))= sqrt(1+4 )= sqrt(5)` mm

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