Energy needed in the breaking of a drop of radius $R$ into $n$ drops of radius $r$ is given by : (With $S$ surface tension and $P$ atmospheric pressure)

$\sim (p \vee q) \vee (\sim p \wedge q)$ is logically equivalent to

There is some change in length when a $33000 ~N$ tensile force is applied on a steel rod of area of cross-section $10^{-3} ~m^2$. The change of temperature required to produce the same elongation,if the steel rod is heated,is (The modulus of elasticity is $3 \times 10^{11} ~N/m^2$ and the coefficient of linear expansion of steel is $1.1 \times 10^{-5} /{ }^{\circ} C$). (in $^{\circ} C$)

Which type of cartilage is found at the ends of long bones?

Which substance is used as a gaseous insulator in high-voltage generators?

In the given figure,what do $A$ and $B$ represent respectively?