1.

A planet is revolving round the sun is elliptical orbit. Velocity at perigee position ( nearest) is v_(1) and at apogee position ( farthest)is v_(2). Both these velocities are perpendicularto the line joining centre of sun and planet. r_(1) is the minimum distance and r_(2) the maximum distance. At apogee position suppose speed of planet is slightly decreased from v_(2), then what will happen to minimum distance r_(1) and maximum distance r_(2) in the subsequent motion.

Answer»

`r_(1)` and `r_(2)` both will decrease
`r_(1)` and `r_(2)` both will INCREASE
`r_(2)` will REMAIN as it is while `r_(1)` will increase
`r_(2)` will remain as it is while `r_(1)` will decrease

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