The kinetic energies of a planet in an elliptical orbit about the Sun, at positions A, B and C are
respectively. AC is the major axis and SB is perpendicular to AC at the position of the Sun S as shown in the figure. Then

If the distance between sun and earth were reduced to half its present value, then the number of days in one year would have been

​The escape velocity for a body of mass 1kg from earth's surface is 11.2$$\text{kms}^{-1}$$​ the escape velocity for a body of mass 100 kg would be:​

If the acceleration due to gravity of the earth is 6 times the acceleration due to gravity on moon, which of the following statement is correct?

What will happen during the free fall of a massive object under the influence of gravitational force of the earth?

If the distance between sun and earth were reduced to half its present value, then the number of days in one year would have been