Mht Cet
Fluid Mechanics
MHT CET 2021 22th September Evening Shift
MCQ+1 / -02021
A needle is \(7 \mathrm{~cm}\) long. Assuming that the needle is not wetted by water, what is the weight of the needle, so that it floats on water?
\(\left[\mathrm{T}=\right.\) surface tension of water \(\left.=70 \frac{\mathrm{dyne}}{\mathrm{cm}}\right]\)
[acceleration due to gravity \(=980 \mathrm{~cm} \mathrm{~s}^{-2}\)]