A Maxwell’s velocity distribution curve area under the graphA. Increases when temperature is increasedB. Decreases when temperature is increasedC. Remains same at all temperatureD. Depends on the pressure of the gas

A. Increases when temperature is increased.

The Maxwell-Boltzmann distribution describes the distribution of velocities for particles in a gas at a given temperature. The distribution is a probability density function that represents the fraction of particles having a specific velocity.

The shape of the Maxwell's velocity distribution curve depends on temperature. When the temperature of a gas is increased, the curve becomes broader and flatter, meaning that the area under the graph (which represents the total number of particles) increases. This is because higher temperatures correspond to higher average velocities for the gas particles, resulting in a wider range of velocities being observed.

Therefore, option A is correct. The area under the Maxwell's velocity distribution curve increases when the temperature is increased.