JEE Advanced · PhysicsEasy
If the mass of the Earth were doubled and its radius were halved, the acceleration due to gravity on its surface would become how many times its original value?
- A.2 times
- B.4 times
- C.8 times
- D.1/2 times
Show correct answer & step-by-step solution
Correct answer: C — 8 times
Solution
- The formula for acceleration due to gravity is .
- Let the new mass be and the new radius be .
- The new gravity is .
- Hence the answer is (C).
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