The smallest base area is breadth × width (800 cm²), meaning the maximum pressure is exerted in this case. Correct answer: (b) Maximum when breadth and width form the base. Class 9th Science NCERT MCQ Questions NCERT Books MCQ Questions ...
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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 (a) P = F/A. Pressure (P) is defined as the force (F) applied per unit area (A). Mathematically, it is given by: P = F/A This means that pressure increases if force increases or area decreases.
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 ...