A planet in an elliptical orbit passes three locations P, Q and R where its distances…

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

A planet in an elliptical orbit passes three locations P, Q and R where its distances from the Sun are

4\times10^{10}\,\text{m}

6\times10^{10}\,\text{m}

and

8\times10^{10}\,\text{m}

respectively. The time intervals required to cover an angular displacement of

5^{\circ}

around the Sun at these points are

t_P

t_Q

and

t_R

. Which of the following correctly ranks these time intervals? (a)

t_R<t_Q<t_P

(b)

t_Q<t_P<t_R

(c)

t_P<t_Q<t_R

(d)

t_P=t_Q=t_R