Gravitation – Objective Questions
Page 1 • Previous Exam Questions with Explanations
Question 1
The gravitational force between two bodies becomes one-fourth when the distance between them is:
A) doubled B) halved C) tripled D) unchanged
Correct Answer: A) doubled
Explanation:
Gravitational force F ∝ 1/r². If distance becomes 2r, force becomes 1/(2²) = 1/4.
Question 2
Acceleration due to gravity at the centre of Earth is:
A) maximum B) minimum C) zero D) equal to surface value
Correct Answer: C) zero
Explanation:
At the centre of Earth, gravitational forces from all sides cancel each other, so net force is zero.
Question 3
The weight of a body on the Moon is about:
A) same as Earth B) twice that on Earth C) one-sixth of Earth D) zero
Correct Answer: C) one-sixth of Earth
Explanation:
Acceleration due to gravity on Moon ≈ g/6. Weight = mg, so weight reduces to one-sixth.
Question 4
Escape velocity of a planet depends on:
A) mass of object B) shape of object C) mass and radius of planet D) density of object
Correct Answer: C) mass and radius of planet
Explanation:
ve = √(2GM/R). It depends only on planet parameters, not object mass.
Question 5
If Earth’s radius becomes half but mass remains same, acceleration due to gravity becomes:
A) half B) double C) four times D) one-fourth
Correct Answer: C) four times
Explanation:
g = GM/R². If R → R/2, then g → 4g.
Question 6
A satellite revolves around Earth because:
A) no gravity acts on it B) gravity acts as centripetal force C) it is outside atmosphere D) its mass is small
Correct Answer: B) gravity acts as centripetal force
Explanation:
Gravitational force provides necessary centripetal force for circular motion.
Question 7
Mass of a body on Moon compared to Earth is:
A) less B) more C) zero D) same
Correct Answer: D) same
Explanation:
Mass is intrinsic property and does not depend on gravity.
Exam Strategy (Objective Questions)
- Read options before solving
- Check units and powers
- Use elimination method
- Recall basic formulas instantly
Objective Questions • Page 1 Completed ✅
📚 IIT JEE PHYSICS – COMPLETE MASTER LIBRARY
Concepts • Problems • Tough Questions • Exam Mastery • Topper Thinking
🌍 GRAVITATION – IIT JEE EXAM MASTERY (FULL SERIES)
Concept → Board → IIT → Tough → Mastery
- Gravitation – Part 1
- Gravitation – Part 2
- Gravitation – Part 3
- Gravitation – Part 4
- Gravitation – Part 5
- Gravitation – Part 6
- Gravitation – Part 7
- Gravitation – Part 8
- Gravitation – Part 9
- Gravitation – Part 10
- Gravitation – Part 11
- Gravitation – Part 12
- Gravitation – Part 13
- Gravitation – Part 14
- Gravitation – Part 15
- Gravitation – Part 16
- Gravitation – Part 17
- Gravitation – Part 18
- Gravitation – Part 19
- Gravitation – Part 20
- Gravitation – Part 21
- Gravitation – Part 22
- Gravitation – Part 23
- Gravitation – Part 24
- Gravitation – Part 25
- Gravitation – Part 26
- Gravitation – Part 27
- Gravitation – Part 28
- Gravitation – Part 29
- Gravitation – Part 30
- Gravitation – Part 31
- Gravitation – Part 32
- Gravitation – Part 34
- Gravitation – Part 35
- Gravitation – Part 36
- Gravitation – Part 37
- Gravitation – Part 38
- Gravitation – Part 39
- Gravitation – Part 40
- Gravitation – Part 41
- Gravitation – Part 42
📘 OTHER PHYSICS LIBRARIES
- Momentum & Collisions – Complete Library
- Centre of Mass & System of Particles – Complete Library
- Work, Energy & Power – Complete Library
🧠 THINKING & FOUNDATION
🌐 MASTER HUBS
📲 STUDENT COMMUNITY
✅ IIT JEE PHYSICS LIBRARY – COMPLETE | STRUCTURED | EXAM-ORIENTED
No comments:
Post a Comment