First slide

Gravitational force and laws

Question

A planet revolves around the sun is an elliptical orbit. The maximum and minimum distances of the planet from the sun are a and b respectively. The time period of revolution of the planet is proportional to

Easy

A

$a^{3 / 2}$
B

$b^{3 / 2}$
C

$(a + b)^{3 / 2}$
D

$(a - b)^{3 / 2}$

Solution

According to Kepler's law, the square of the time period is proportional to the cube of the semi-major axis of the ellipse, i.e. $T^{2} \propto {(\frac{a + b}{2})}^{3}$ . So the correct choice is (c).

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App