JEE Mains · Physics · STD 11 - Gravitation
- JEE Mains 2023
- Medium
- MCQ
Given below are two statements: Statement \(I:\) For a planet, if the ratio of mass of the planet to its radius increases, the escape velocity from the planet also increases. Statement \(II:\) Escape velocity is independent of the radius of the planet. In the light of above statements, choose the most appropriate answer from the options given below on :
Pick an option to check your answer.
Answer & Solution
Correct Answer
(B) Statement \(I\) is correct but statement \(II\) is incorrect
Step-by-step Solution
Detailed explanation
\(V _{ e }=\sqrt{\frac{2 GM }{ R }} \Rightarrow V _{ e } \propto \sqrt{\frac{ M }{ R }}\)
As \(\frac{M}{R}\) increases \(\Rightarrow V_e\) increases
Statement \((1)\) is correct
Also \(V _{ e } \propto \frac{1}{\sqrt{ R }}\)
As \(V _{ e }\) depends upon \(R\)
\(\Rightarrow\) Statement \((2)\) is incorrect
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