NEET 2019 P1 Question Paper - PYQ Mock Test

Two parallel infinite line charges with linear charge densities $+\lambda \text{C/m}$ and $-\lambda \text{C/m}$ are placed at a distance of $2R$ in free space. What is the electric field mid-way between the two line charges?

Two point charges $A$ and $B$, having charges $+Q$ and $-Q$ respectively, are placed at certain distance apart and force acting between them is $F$. If $25\%$ charge of $A$ is transferred to $B$, then force between the charges becomes:

A small hole of area of cross-section $2{\text{mm}}^2$ is present near the bottom of a fully filled open tank of height $2\text{m}$. Taking $g=10{\text{m/s}}^2$, the rate of flow of water through the open hole would be nearly:

The correct Boolean operation represented by the circuit diagram drawn is:

In which of the following processes, heat is neither absorbed nor released by a system?