Q

A planet has twice Earth's mass and twice Earth's radius. Its surface gravity is ng. What is n?

RRB Minis. & Iso. Category (Junior Translator Hindi); RRB ALP & Technician 11/09/2025 / Shift III; 21/08/2018 / Shift III 2025; 2018
✓ Answer: C 1/2
n = (2)/(2²) = 1/2.
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