Derive and explain Kepler's laws of planetary motion.

Assertion (A) : The time period of revolution of a satellite around a planet is directly proportional to the radius of the orbit of the satellite. Reason (R) : Artifical satellite do not follow Kepler's laws of planatory motion.

Deduce the law of gravitation from Kepler’s laws of planetary motion

Assertion : Kepler's law for planetary motion are consequence of Newton's laws Reason : Kepler's laws can be derived by using Newton's laws.

According to Kepler's law of planetary motion, if T represents time period and r is orbital radius, then for two planets these are related as

In Newton's inverse square law of gravitation had some dependence of radial distance other than r^(-2) which on of kepler's three laws of planetary motion would unchanged ?

Statement I: The smaller the orbit of a planet around the Sun, the shorter is the time it takes to complete. Statement II: According to Kepler's third law of planetary motion, square of time period is proportional to cube of mean distance from Sun.

Define or explain : Charles's Law

State and explain the law of inertia (or Newton's first law of motion).

Deduce and explain Boyle's law and Charles' law on the basis of kinetic gas equation.

State and explain the first law of thermodynamics. Derive its mathematical form.