NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Gravitation
NEET · Physics · Gravitation
Statement-I: All other planets except mercury and pluto revolve...
Statement-I: All other planets except mercury and pluto revolve around the sun in almost circular orbits.
Statement-II: If the radius of planet decreases by (\mathrm{x} \%) keeping the mass constant. The acceleration due to gravity on its surface increases by (x \%).
Options
- ABoth Statement-I and Statement-II are correct.
- BBoth Statement-I and Statement-II are incorrect.
- CStatement-I is correct & Statement-II is incorrect.
- DStatement-I is incorrect & Statement-II is correct.
Correct answer
C. Statement-I is correct & Statement-II is incorrect.
Step-by-step solution
- I: Except Mercury and Pluto, the other planets have very small orbital eccentricities orbits are nearly circular.
({ }^{\bullet}) II: (g=. If decreases by ((R^{\prime}=R\left(1-\frac{x}{100}\right)\frac{G M}{R^2}=\frac{G M}{R^2\left(1-\frac{x}{10 \pi}\right)^2}=g\left(1-\frac{x}{100}\right)^{-2}
It is not .