Question

Among the following statement which are false  related to kepler’s law of planetary motion. 

A.All planet are revolving around the sun in circular path.

B.They covers equal area in unequal interval of time.

C. They covers unequal area in equal interval of time .

D.Their period of revolution inversely proportional to  cube of mean distance from the sun.

E. All planets are revolving around the sun in ellipse path. 

F. The square of its  mean distance is directly proportional to cube of time for revolution. 

G. The square of its period of is directly proportional to cube of mean distance of revolution. 

A,C,G

B,F,D

A,F,D

A,D,B

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Answer 1

✰ Question✰

➤Among the following statement which are false  related to kepler’s law of planetary motion. 

✰Options ✰

(A)All planet are revolving around the sun in circular path.

(B)They covers equal area in unequal interval of time.

(C)They covers unequal area in equal interval of time .

(D).Their period of revolution inversely proportional to  cube of mean distance from the sun.

(E) All planets are revolving around the sun in ellipse path. 

(F) The square of its  mean distance is directly proportional to cube of time for revolution. 

(G) The square of its period of is directly proportional to cube of mean distance of revolution. 

(1) A,C,G

(2) B,F,D

(3)A,F,D

(4) A,D,B

✸Answer ✸

➠ According to given question these options do not follow Kepler Law of planetary motion

➠Option ( 1) A, C, G are false.

✰Additional information ✰

➠There are three laws of kepler's Planetary motion

(1) ➧ All planets move in elliptical orbits with the sun at the focus.

(2)➧ The line joining a planet to the sun sweeps equal areas in equal times.

(3)➧ The square of the time period (time taken to complete a revolution) is proportional to the cube of the average distance of the planet from the sun