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Air is pushed in a soap bubble to increa...

Air is pushed in a soap bubble to increase its radius from R to 2R . In this case the pressure inside the bubble

A

becomes zero

B

increases

C

decreases

D

does not change

Text Solution

Verified by Experts

The correct Answer is:
C
Excess pressure in a soap bubble is `P = (4T)/R i.e P prop 1/R`
Thus if the radius of the soap bubble is increased , the pressure is decreased .
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MARVEL PUBLICATION-SURFACE TENSION -MULTIPLE CHOICE QUESTIONS . (STANDARD LEVEL)
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  7. Air is pushed in a soap bubble to increase its radius from R to 2R . I...

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  8. At critical temperature, the surface tension of a liquid

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  10. When a soap bubble is charged :-

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  14. A long cylinderical glass vessel has a small hole of radius r at its b...

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  15. What is the energy required to blow a soap bubble of radius 5 cm ? [ S...

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  16. The surface tension of soap solution is 0.030 N/m . What is the energy...

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  17. Work done in increasing the size of a soap bubble from a radius of 3cm...

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  18. When NaCl is added to water, the surface tension of watr will

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