MHT CET 2021 21th September Evening Shift | MHT CET Year Wise Previous Years Questions

A molecule of mass 'm' moving with velocity 'v' makes 5 elastic collisions with a wall of container per second. The change in momentum of the wall per second in 5 collisions will be

10 mv

5 mv

$$\frac{1}{5}$$ mv

$$\frac{1}{10}$$ mv

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

In thermodynamics, for an isochoric process, which one of the following statement is INCORRECT?

Energy exchanged is used to do work and also to change internal energy.

No work is done in the process.

It is a constant volume process.

Temperature of the system changes during the process.

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

The ratio of energy required to raise a satellite of mass '$$m$$' to height '$$h$$' above the earth's surface to that required to put it into the orbit at same height is [ $$\mathrm{R}=$$ radius of earth]

$$\frac{h}{R}$$

$$\frac{2 h}{\mathrm{R}^2}$$

$$\frac{3 \mathrm{~h}}{\mathrm{R}^2}$$

$$\frac{2 \mathrm{~h}}{\mathrm{R}}$$

PREVIOUS NEXT