JEE Main 202126 FebruaryMorning Shift
- Exam
- JEE Main
- Year
- 2021
- Date
- 26 February
- Shift
- Morning Shift
- Subject
- Physics
- Chapter
- Gravitation
JEE Main 2021 · 26 February · Morning Shift · Physics · Gravitation
A planet revolving in elliptical orbit has : A. a constant velocity...
A planet revolving in elliptical orbit has :
A. a constant velocity of revolution.
B. has the least velocity when it is nearest to the sun.
C. its areal velocity is directly proportional to its velocity.
D. areal velocity is inversely proportional to its velocity.
E. to follow a trajectory such that the areal velocity is constant.
Choose the correct answer from the options given below:
Options
- AA only
- BC only
- CE only
- DD only
Correct answer
C. E only
Step-by-step solution
As per Kepler’s second law “The areal velocity of a planet revolving around the sun in elliptical orbit remains constant which implies the angular momentum of a planet remains constant”. Hence (option E) is the correct option.