NEET 2023 Question Paper Mock Test

A metal wire has mass $(0.4\pm 0.002)\text{g}$, radius $(0.3\pm 0.001)\text{mm}$ and length $(5\pm 0.02)\text{cm}$. The maximum possible percentage error in the measurement of density will nearly be:

The equivalent capacitance of the system shown in the following circuit is:

Two bodies of mass $m$ and $9m$ are placed at a distance $R$. The gravitational potential on the line joining the bodies where the gravitational field equals zero, will be ($G=\text{gravitational constant}$):

The venturi-meter works on:

The half-life of a radioactive substance is $20\text{minutes}$. In how much time, the activity of the substance drops to ${\frac{1}{16}}^{\text{th}}$ of its initial value?