Q 11-07-006NEETNEET 2024Top questionEasy
The mass of a planet is $\dfrac{1}{10}$th that of the earth and its diameter is half that of the earth. The acceleration due to gravity on that planet is :
Answer: (B) $3.92\ \text{m s}^{-2}$
Concept. $g = \dfrac{GM}{R^2}$.
Step 1. Scale. $g_p = 9.8 \times \dfrac{1}{10} \times 2^2 = 3.92\ \text{m s}^{-2}$.
Answer. $3.92\ \text{m s}^{-2}$ (Option B).
Solution by Sreeraj P, M.Sc Physics