Question

The work done W is required by an agent to form a bubble of radius R. An extra amount of work △W is required to increase the radius by △R. If $\frac{△R}{R}$=1%,$\frac{△W}{W}$ is:

• A. 2%
• B. 1%
• C. 4%
• D. 3%
• E. 0.50%

Answer 1

Answer: (A)

2%

Answer 2

The correct answer is (A):2%