Q. If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitude, which of the following is not correct ?
A) Time period of a simple pendulum on the Earth would decrease.
B) Walking on the ground would become more difficult.
C) Raindrops will fall faster.
D) 'g' on the Earth will not change.
Explanation
[Solution] $g = GM_E/R^2$ depends on Earth's mass, not the Sun's; with G ten times larger, g increases, so (4) is not correct. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.