Gravitation practice · Medium

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Practice format and chapter quiz

These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.

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391 Medium

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Application +4 | -1

If the radius of earth shrinks by

2 \%

while its mass remains same. The acceleration due to gravity on the earth's surface will approximately

View answer and explanation

Correct option: D

Increase by

4 \%

Option D (Increase by

4\%

) is correct because the acceleration due to gravity is inversely proportional to the square of the radius, so a decrease in radius leads to an increase in g.

392 Medium

392 of 392

Application +4 | -1

If the radius of a planet is R and its density is

\rho

, the escape velocity from its surface will be

View answer and explanation

Correct option: B

{v_e} \propto \sqrt {\rho R}

Option B (

{v_e} \propto \sqrt {\rho R}

) is correct because the escape velocity is directly proportional to the square root of the product of density and radius.

Revision notes and key takeaways

Review GRAVITATION in your textbook or class notes, then use this set to check your understanding.

Showing 391-392 of 392 questions

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