Q. If the mass of Earth is doubled, the gravitational force on its surface becomes

यदि पृथ्वी का द्रव्यमान दोगुना कर दिया जाए तो इसकी सतह पर गुरुत्वाकर्षण बल हो जाता है

Half
आधा

Double
दोहरा

Four times
चार बार

Unchanged
स्थिर

The gravitational force (or weight) on the surface is:

$F = \frac{G M m}{R^2}$

If Earth’s mass $M$ doubles, $F$ doubles since force is directly proportional to Earth’s mass.

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