1.

The largest and the shortest distance of the earth from the sun are r_(1) and r_(2). Its distance from the sun when it is at perpendicular to the major -axis of the orbit drawn from the sun is

Answer»

`(ETA+eta_(2))/(4)`
`(eta+eta_(2))/(eta_(1)-eta_(2))`
`(2etar_(1)r_(2))/(r_(1)+r_(2))`
`(r_(1)+r_(2))/(3)`

SOLUTION :Applying the properties of ELLIPSE, we have

`(2)/(R )=(1)/(r_(1))+(1)/(r_(2))=(r_(1)+r_(2))/(r_(1)r_(2)) rArr R=(2r_(1)r_(2))/(r_(1)+r_(2))`


Discussion

No Comment Found

Related InterviewSolutions