JEE Mains · Physics · STD 11 - Gravitation
- JEE Mains 2025
- Easy
- MCQ
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : The radius vector from the Sun to a planet sweeps out equal areas in equal intervals of time and thus areal velocity of planet is constant.
Reason (R) : For a central force field the angular momentum is a constant.
In the light of the above statements, choose the most appropriate answer from the options given below :
Pick an option to check your answer.
Answer & Solution
Correct Answer
(A) Both \((\mathrm{A})\) and \((\mathrm{R})\) are correct and \((\mathrm{R})\) is the correct explanation of \(\mathrm{( A)}\)
Step-by-step Solution
Detailed explanation
\(\frac{\mathrm{dA}}{\mathrm{dt}}=\frac{\mathrm{L}}{2 \mathrm{~m}}\)
Due to central force torque is zero \(\&\) angular momentum is constant.
Due to central force torque is zero \(\&\) angular momentum is constant.
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