Every planet revolves around the sun in an elliptical orbit : A. … - Vidyadip

Question

Every planet revolves around the sun in an elliptical orbit :

$A.$ The force acting on a planet is inversely proportional to square of distance from sun.

$B.$ Force acting on planet is inversely proportional to product of the masses of the planet and the sun

$C.$ The centripetal force acting on the planet is directed away from the sun.

$D.$ The square of time period of revolution of planet around sun is directly proportional to cube of semi-major axis of elliptical orbit.

Choose the correct answer from the options given below :

✓

Answer

$F =\frac{ Gm _1 m _2}{ r ^2}$

$\Rightarrow F \propto \frac{1}{ r ^2}$

$\Rightarrow F \propto m _1 m _2$

$\Rightarrow \text { This force provides centripetal force and acts }$

towards sun

$\Rightarrow T ^2 \propto a ^3 \text { (Kepler's third law) }$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A coil of cross-sectional area $A$ having $n$ turns is placed in a uniform magnetic field $B.$ When it is rotated with an angular velocity $\omega ,$ the maximum $e.m.f.$ induced in the coil will be

Specific heats of monoatomic and diatomic gas is same than which relation is valid

In the figure below, what is the potential difference between the points $A$ and $B$ and between $B$ and $C$ respectively in steady state

A water barrel stands on a table of height $h$. If a small hole is punched in the side of the barrel at its base, it is found that the resultant stream of water strikes the ground at a horizonatal distance $R$ from the barrel. The depth of water in the barrel is

Escape velocity on a planet is ${v_e}$. If radius of the planet remains same and mass becomes 4 times, the escape velocity becomes

The mechanism of the hydrogen bomb is based on

A solenoid is $1.5\, m$ long and its inner diameter is $4.0 \,cm.$ It has three layers of windings of $1000$ turns each and carries a current of $2.0\, amperes$. The magnetic flux for a cross-section of the solenoid is nearly

Water rises in a capillary upto a height of $4\, cm$. If it is titled to $30^o$ from the vertical, then the length of water column in it will be

A beam contains $2 \times 10^8$ doubly charged positive ions per cubic centimeter, all of which are moving with a speed of $10^5 \,m/s$. The current density is ............. $A/m^2$

A force of $5\, N$acts on a particle along a direction making an angle of $60^°$ with vertical. Its vertical component be.......$N$