Question

The time period of a satellite of earth is 5h . if the separation between the earth and the satellite is increased to 4 times the previous value ,the new time period will become [AIEEE 2003]​

Answer 1

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Answer 2

Explanation:- According to kepler's law

• T² ∝r³
• ⟹ 5² ∝ T³ _____ (i)

• and ,(T')² ∝ (5r)³

From Equation (i) and (ii) , we have

25 /(T')² = r³/,64r³

⟹ T ' = √64* 25

⟹ T' = √1600 = 40hour

The new time period will be 40h