WBJEE · Chemistry · States of Matter
The units of surface tension and viscosity of liquids respectively are
- A \(\mathrm{kg} \mathrm{m}^{-1} \mathrm{s}^{-1}, Nm^{-1}\)
- B \(\mathrm{kg} \mathrm{s}^{-2}, \mathrm{kg} \mathrm{m}^{-1} \mathrm{s}^{-1}\)
- C \(\mathrm{Nm}^{-1}, \mathrm{kg} \mathrm{m}^{-1} \mathrm{s}^{-2}\)
- D \(\mathrm{kg} \mathrm{s}^{-1}, \mathrm{kg} \mathrm{m}^{-2} \mathrm{s}^{-1}\)
Answer & Solution
Correct Answer
(B) \(\mathrm{kg} \mathrm{s}^{-2}, \mathrm{kg} \mathrm{m}^{-1} \mathrm{s}^{-1}\)
Step-by-step Solution
Detailed explanation
From the formula, Surface tension, \((\gamma)\) \[ =\frac{\Delta W}{\Delta A}=\frac{\mathrm{J}}{\mathrm{m}^{2}}=\frac{\mathrm{kg} \mathrm{m}^{2} \mathrm{s}^{-2}}{\mathrm{m}^{2}}=\mathrm{kg} \mathrm{s}^{-2} \] Form the formula, \(F=\eta \cdot A \cdot \frac{d V}{d x}\) or,…
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