Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Gravitation

Question:

At what height the gravitational field reduces by 75% the gravitational field at the surface of earth ?

Options:

R

2R

3R

4R

Correct Answer:

R

Explanation:

$\left(g-\frac{3 g}{4}\right)=\frac{g R^2}{(R+h)^2}$

⇒ h = R