JEE MAIN 2022 ONLINE 28TH JULY EVENING SHIFT

A radioactive sample decays \(\frac{7}{8}\) times its original quantity in 15 minutes. The half-life of the sample is

Concentrated \(\mathrm{HNO}_{3}\) reacts with Iodine to give :

A horizontal park is in the shape of a triangle \(\mathrm{OAB}\) with \(\mathrm{AB}=16\). A vertical lamp post \(\mathrm{OP}\) is erected at the point \(\mathrm{O}\) such that \(\angle \mathrm{PAO}=\angle \mathrm{PBO}=15^{\circ}\) and \(\angle \mathrm{PCO}=45^{\circ}\), where \(\mathrm{C}\) is the midpoint of \(\mathrm{AB}\). Then \((\mathrm{OP})^{2}\) is equal to :

An n.p.n transistor with current gain \(\beta=100\) in common emitter configuration is shown in figure. The output voltage of the amplifier will be

The correct decreasing order for metallic character is :

Let the lines

\(\frac{x-1}{\lambda}=\frac{y-2}{1}=\frac{z-3}{2}\) and

\(\frac{x+26}{-2}=\frac{y+18}{3}=\frac{z+28}{\lambda}\) be coplanar

and \(\mathrm{P}\) be the plane containing these two lines.

Then which of the following points does NOT lie on P?