The atmosphere is held to the Earth by gravity (option a). Gravity keeps gases from escaping into space, maintaining the air we breathe. Without gravity, Earth’s atmosphere would dissipate, making life impossible. Class 9th Science NCERT MCQ Questions NCERT Books ...

The correct answer is (d) is independent of mass and radius of the Earth. The gravitational constant (G) is a universal constant with a fixed value 6.674 × 10−¹¹ N.M²/kg² It It remains the same everywhere in the universe and does ...

The correct answer is (c) g/6. The acceleration due to gravity on the Moon is about 1/6th of that on Earth because the Moon has much less mass and a smaller radius. Class 9th Science NCERT MCQ Questions NCERT Books ...

The correct answer is (c) Is least on equator. The acceleration due to gravity (g) is slightly less at the equator and greater at the poles due to Earth’s rotation and its slightly oblate shape. Centrifugal force at the equator ...

The correct answer is (c) Force acting on the object due to force of gravity. Weight is the gravitational force exerted on an object by Earth. It is given by W = mg, where m is mass and g is ...