The surface tension of soap solution is 25 × 10-3 Nm-1. The excess pressure inside a soap bubble of diameter 1 cm is ………
A. 5 Pa
B. 10 Pa
C. 20 Pa
D. None of these
Answer:C
The surface tension of soap solution is 25 × 10-3 Nm-1. The excess pressure inside a soap bubble of diameter 1 cm is ………
A. 5 Pa B. 10 Pa C. 20 Pa D. None of these