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Q.

A satellite revolves in an equatorial plane in west to east direction around the earth with a period of 8 hrs. At an instant it is observed vertically overhead a longitude. How much minimum time after this instant, the satellite will again be overhead the same longitude?

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a

24h

b

36h

c

12h

d

8h

answer is B.

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Detailed Solution

ω1t-ω2t=2π ⇒2π8t-2π24t=2π ⇒t=8×2424-8=12h

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