Last Updated on May 15, 2025 by XAM CONTENT
Understanding the key concepts of Class 9 Science Chapter 9 – Gravitation is crucial for exam success. To make your revision easier, we have created chapterwise mcq questions with Answers for class 9 Science based on the latest syllabus and exam pattern. It is a part of MCQ Questions for CBSE Class 9 Science Series.
These multiple-choice questions will help you assess your knowledge, improve accuracy, and boost confidence for your exams. Whether you are preparing for school tests, online tests or competitive exams, these Gravitation MCQs will strengthen your conceptual clarity.
| Chapter | Gravitation |
| Book | Science Textbook for Class 9 |
| Type of Questions | MCQ Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 9 |
| Subject | Science |
| Useful for | Class 9 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 9 Science Chapterwise MCQ Questions |
MCQ Questions on Gravitation Class 9 Science
MCQs
Q1. Which force is responsible for the motion of planets around the Sun?
(a) Magnetic force
(b) Nuclear force
(c) Gravitational force
(d) Electrostatic force
Show Answer
Answer: (c)
Explanation: Gravitational force is the attractive force that governs the motion of planets around the Sun.
Q2. According to the universal law of gravitation, the force between two objects is:
(a) Directly proportional to the distance between them
(b) Inversely proportional to their masses
(c) Inversely proportional to the square of the distance between them
(d) Directly proportional to the square of the distance between them
Show Answer
Answer: (c)
Explanation: F ∝ 1/d², where d is the distance between the objects’ centers.
Q3. The value of gravitational constant (G) is:
(a) 9.8 m/s²
(b) 6.67 × 10⁻¹¹ N m²/kg²
(c) 1.6 × 10⁻¹⁹ C
(d) 3.0 × 10⁸ m/s
Show Answer
Answer: (b)
Explanation: G = 6.67 × 10⁻¹¹ N m²/kg² is a universal constant used in gravitational force calculations.
Q4. Which of the following statements is correct about weight?
(a) It is constant everywhere
(b) It is the same as mass
(c) It changes from place to place
(d) It is measured in kg
Show Answer
Answer: (c)
Explanation: Weight depends on local gravitational acceleration (g), which varies with location.
Q5. Which quantity remains constant everywhere for an object?
(a) Weight
(b) Mass
(c) Volume
(d) Force
Show Answer
Answer: (b)
Explanation: Mass is intrinsic to an object and does not change with location.
Q6. Which condition is necessary for an object to float on water?
(a) Its weight must be more than upthrust
(b) Its density must be more than water
(c) Its weight must equal upthrust
(d) It must be solid
Show Answer
Answer: (c)
Explanation: An object floats if the buoyant force (upthrust) balances its weight.
Q7. What causes the feeling of weightlessness in a satellite?
(a) Absence of gravity
(b) Reduced gravity
(c) Free fall of the satellite
(d) Zero mass of astronauts
Show Answer
Answer: (c)
Explanation: Satellites are in free fall, so both astronauts and spacecraft fall at the same rate, creating a weightless sensation.
Q8. The acceleration due to gravity on the Moon is:
(a) Same as Earth
(b) 1/2 of Earth
(c) 1/6 of Earth
(d) 9.8 m/s²
Show Answer
Answer: (c)
Explanation: The Moon’s gravity is 1/6th that of Earth due to its smaller mass and radius.
Q9. The unit of pressure is:
(a) N
(b) N/m
(c) N/m²
(d) Pascal
Show Answer
Answer: (d)
Explanation: Pressure is defined as force per unit area, measured in pascal (Pa).
Q10. Why do sharp knives cut better than blunt ones?
(a) They exert more force
(b) They exert more pressure
(c) They are longer
(d) They are lighter
Show Answer
Answer: (b)
Explanation: Sharp edges concentrate force over a smaller area, increasing pressure and cutting efficiency.
Q11. What happens to pressure if the area over which a force is applied increases?
(a) Increases
(b) Decreases
(c) Remains same
(d) Becomes infinite
Show Answer
Answer: (b)
Explanation: Pressure = Force/Area. When area increases, pressure decreases.
Q12. Which principle explains why ships float?
(a) Pascal’s principle
(b) Newton’s laws
(c) Archimedes’ principle
(d) Bernoulli’s principle
Show Answer
Answer: (c)
Explanation: Archimedes’ principle explains buoyant force and floating behavior.
Q13. What is the direction of buoyant force?
(a) Downward
(b) Lateral
(c) Upward
(d) Circular
Show Answer
Answer: (c)
Explanation: Buoyant force always acts vertically upward, opposite to gravity.
Q14. If two objects attract each other with a force F, and their masses are doubled, the new force becomes:
(a) F/4
(b) F/2
(c) F
(d) 4F
Show Answer
Answer: (d)
Explanation: F ∝ m₁m₂, so doubling both masses increases force four times.
Q15. A person weighs less at the equator than at the poles due to:
(a) Higher g at equator
(b) Greater height
(c) Earth’s rotation and shape
(d) Weighing machine defect
Show Answer
Answer: (c)
Explanation: At the equator, centrifugal force due to Earth’s rotation and larger radius reduce effective gravity.
Q16. Which object will experience more buoyant force in water?
(a) A denser object
(b) A heavier object
(c) An object displacing more water
(d) An object with smaller volume
Show Answer
Answer: (c)
Explanation: Buoyant force depends on the volume of water displaced, not directly on weight or density.
Q17. Which factor does NOT affect the value of g on Earth?
(a) Height above surface
(b) Latitude
(c) Mass of object
(d) Depth below surface
Show Answer
Answer: (c)
Explanation: g is independent of the mass of the falling object.
Q18. A body of weight 20 N experiences an upthrust of 5 N in water. Its apparent weight is:
(a) 20 N
(b) 15 N
(c) 25 N
(d) 5 N
Show Answer
Answer: (b)
Explanation: Apparent weight = actual weight – upthrust = 20 N – 5 N = 15 N.
Q19. A body floats in water. Its weight is equal to:
(a) Zero
(b) Buoyant force
(c) More than buoyant force
(d) Less than buoyant force
Show Answer
Answer: (b)
Explanation: Floating occurs when buoyant force equals the object’s weight.
Q20. The value of acceleration due to gravity (g) on Earth is approximately:
(a) 6.67 × 10⁻¹¹ m/s²
(b) 10 m/s²
(c) 9.8 m/s²
(d) 1.6 m/s²
Show Answer
Answer: (c)
Explanation: Standard acceleration due to gravity near Earth’s surface is 9.8 m/s².
We hope the given mcq questions with Answers for Gravitation Class 9 helps you in your learning.
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Topics from which mcq questions may be asked
- Universal law of gravitation
- Free fall and acceleration due to gravity
- Thrust and pressure
Gravitation governs the motion of planets and the fall of apples alike.
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Frequently Asked Questions (FAQs) on Gravitation MCQ Questions
Q1: What are MCQ questions in Class 9 Science?
A1: MCQ (Multiple Choice Questions) in Class 9 Science are objective-type questions where students choose the correct answer from four options. They test conceptual understanding, application, and reasoning skills.
Q2: Are these Class 9 Science MCQs based on the latest CBSE syllabus?
A2: Yes, all MCQ questions provided are strictly based on the latest CBSE Class 9 Science syllabus and follow the current NCERT textbook.
Q3: Are Class 9 Science MCQ questions useful for board exam preparation?
A3: Yes, practicing MCQ questions helps build strong conceptual understanding and improves performance in school tests, Olympiads, and board-level competency assessments.
Q4: Do these MCQs include answers and explanations?
A4: Absolutely. Each MCQ question includes the correct answer along with a detailed explanation to help students understand the concept behind the question.
Q5: Where can I find the best MCQ questions for Class 9 Science?
A5: You can find high-quality, CBSE-based MCQ questions for Class 9 Science on trusted educational websites like xamcontent.com. These include chapterwise, topicwise, and competency-based questions aligned with the latest syllabus
Q6: Are there any resources available online for students to practice mcq questions on class 9 science chapter 9 “Gravitation“ for CBSE exams?
A6: Yes, several educational websites offer mcq questions for CBSE students preparing for science examinations. We also offer a collection of mcq questions for all classes and subject on our website. Visit our website to access these questions and enhance your learning experience. for more mcq, you can also visit Physics Gurukul Website.
