MCQOPTIONS
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MCQOPTIONS
| 1. |
Radius of a soap bubble is 'r', surface tension of soap solution is T. Then without increasing the temperature, how much energy will be needed to double its radius [CPMT 1991; Pb. PMT 2000; RPET 2001] |
| A. | \[4\pi {{r}^{2}}T\] |
| B. | \[2\pi {{r}^{2}}T\] |
| C. | \[12\pi {{r}^{2}}T\] |
| D. | \[24\pi {{r}^{2}}T\] |
| Answer» E. | |