1.

A planet is revolving round the sun. Its distance from the sun at apogee is r_Aand that at perigee is r_p . The masses of plancet and sun are .m. and M respectively, v_Ais the velocity of planet at apogee and v_pis at perigee respectively and T is the time period of revolution of planet round the sun, then identify the wrong answer.

Answer»

`T^(2)=(pi^2)/(2GM)(r_A+r_P)^3`
`T^(2)=(pi^2)/(2GM)(r_A+r_P)^2`
`v_Ar_A=v_pr_P`
`v_A lt v_p , r_A GT r_p`

ANSWER :D


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