Practicing Success
Practicing Success
CUET Preparation Today
A soap bubble has radius R, charge Q, surface tension T. Find the excess pressure in it. |
$\frac{32 \pi^2 R^2 \varepsilon_0 T-q^2}{32 \pi^2 R^4 \varepsilon_0}$ $\frac{64 \pi^2 R^3 \varepsilon_0 T-q^2}{32 \pi^2 R^4 \varepsilon_0}$ $\frac{128 \pi^2 R^3 \varepsilon_0 T-q^2}{32 \pi^2 R^4 \varepsilon_0}$ none of these |
$\frac{128 \pi^2 R^3 \varepsilon_0 T-q^2}{32 \pi^2 R^4 \varepsilon_0}$ |
$P_{\text {exces }}=\frac{4 T}{R}-\frac{q^2}{32 \pi^2 R^4 \varepsilon_0}$ |
