Question

The kinetic energies of a planet in an elliptical orbit
about the Sun, at positions A, B and C are Ka, KB
and Kc, respectively. AC is the major axis and SB
is perpendicular to AC at the position of the Sun
S as shown in the figure. Then [NEET-2018]
B
А
С C
S
(1) KA < Ko <Kc
(2) KA > Kg > K.
(3) Kg > KA >KC
(4) KE <KA <Kc​

Answer 1

Kepler’s Law

Kepler’s LawdtdA=constant & T2∝r3

Kepler’s LawdtdA=constant & T2∝r3dtdA=constant so

Kepler’s LawdtdA=constant & T2∝r3dtdA=constant soKA>KB>KC

OPTION 4

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