NEET 2020 Exam Paper (180 Q) - Mock Test

Two cylinders $A$ and $B$ of equal capacity are connected to each other via a stop cock. $A$ contains an ideal gas at standard temperature and pressure. $B$ is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is:

The energy equivalent of $0.5\text{g}$ of a substance is:

A body weighs $72\text{N}$ on the surface of the earth. What is the gravitational force on it, at a height equal to half the radius of the earth?

The solids which have the negative temperature coefficient of resistance are:

The phase difference between displacement and acceleration of a particle in a simple harmonic motion is: