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A soap bubble of radius 1cm is formed in...

A soap bubble of radius 1cm is formed in vacuum . It is filled with a monoatomic gas .Then using a syringe ,more gas is pushed inside the soap bubble to double the radius .The surface tension of soap solution is 0.05N/m .Assume temperature to remain constant :-

A

The change in surface energy is 6pi*10^(-5) J

B

The number of moles inside the bubble have become 4 times the original

C

If the gas added is also monoatomic , internal energy of gas becomes 4 times the original

D

If the gas added is diatomic ,the internal energy of gas becomes 6 times the original

Text Solution

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The correct Answer is:
A
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