Question

The earth E moves in an elliptical orbit with the Sun S at one of the foci as shown in figure. Its speed of motion will be maximum at the point

• A. $A$
• B. $B$
  
• C. $C$
  
• D. $D$

Answer 1

The correct option is A $A$

According to the Kepler's Second Law, a line between the sun and the planet sweeps equal areas in equal times.
Thus, the speed of the planet increases as it nears the sun and decreases as it recedes from the sun.
Therefore the speed of the planet will be maximum at point $A$ and minimum at point $B$