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Q.

A satellite moving in elliptical orbit around earth as shown. The minimum and maximum distance of the satellite from earth are 3 units and 5 units respectively. The distance of satellite from earth when it is at ‘P’ is —— ( units )

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a

4

b

3

c

3.75

d

6

answer is A.

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Detailed Solution

Semi major axis =4⇒ae=1⇒e=14
Semi minor axis = b 
b=a1−e2=41−116=15=15
Required distance = =b2+1=4

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