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The largest and the shortest distance of the earth from the sun  are

The largest and the shortest distance of the earth from the sun  are r1 and r2 , its distance from the sun when it is at the perpendicular to the major axis of the orbit drawn from the sun

(a)     r1 + r2 /4                                      (b)  r1 r2/ r1 + r2

(c)  2 r1 r2/ r1 + r2                                (d) r1 + r2 /3

Answer: c

(10)

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