QAIPM-2015-Ph-1328: NEET 2015 Physics - Class 11 AIPM-2015-Ph-1328 Solution: Kepler's third law states that square of period of revolution…

Kepler's third law states that square of period of revolution (T) of a planet around the sun is proportional to third power of average distance r between sun and planet i.e. $T^2 = Kr^3$ here K is constant. If the masses of sun and planet are M and m respectively then as per Newton's law of gravitation force of attraction between them is $F = \frac{GMm}{r^2}$ here G is gravitational constant. The relation between G and K is described as $K = G$ $K = 1/G$ $GK = 4\pi^2$ $GMK = 4\pi^2$