Q. The surface tension of mercury is 32 dyne $cm^{- 1}$. Its value in SI units is
A) 0.032
B) 0.32
C) 3200
D) 32000
Explanation
$T = \frac{32 \times 10^{- 5}}{(10)^{- 2}}$ $= 32 \times 10^{- 3}Nm^{- 1} = 0.032Nm^{- 1}$.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.