The angular magnification of a simple microscope can be increased by increasing

Assume that a drop of liquid evaporates by decrease in its surface energy,so that its temperature remains unchanged. What should be the minimum radius of the drop for this to be possible? The surface tension is $T$,density of liquid is $\rho$ and $L$ is its latent heat of vaporization.

An open-ended $U$-tube of uniform cross-sectional area contains water (density $1.0 \, g/cm^3$) standing initially $20 \, cm$ from the bottom in each arm. An immiscible liquid of density $4.0 \, g/cm^3$ is added to one arm until a layer $5 \, cm$ high forms,as shown in the figure. What is the ratio $h_2/h_1$ of the heights of the liquid in the two arms?

What is the mole ratio of benzene $({P_B}^0 = 150 \ torr)$ and toluene $({P_T}^0 = 50 \ torr)$ in the vapour phase if the given solution has a vapour pressure of $120 \ torr$?

Membrane-bound organelles are absent in

$\sinh(ix)$ is equal to