JEE Main Mechanics: Gravitation – Chapter Test
JEE Main Mechanics: Gravitation – Chapter Test is an online chapter test in the JEE Main pattern, covering Mechanics. Attempt it on SeatBeat with a timer like the real exam, then see a detailed solution for every question and your score and weak-topic analysis.
Topics in this test
| Topic | Questions |
|---|---|
| Mechanics | 20 |
Difficulty: 7 medium · 13 hard
Gravitation MCQ questions with answers
The first 3 of 20 questions. Unlock the series for the rest, each with a solution.
Q1. Match List I (name of Kepler's law or related quantity) with List II (its statement/meaning). List I: A. Law of orbits; B. Law of areas; C. Law of periods; D. Quantity that stays constant and gives rise to the law of areas. List II: 1. Square of the orbital period is proportional to the cube of the semi-major axis; 2. The orbit of a planet is an ellipse with the Sun at one focus; 3. Angular momentum of the planet about the Sun; 4. Areal velocity of the planet. Choose the correct matching.
सूची I (केप्लर के नियम या संबंधित राशि का नाम) का सूची II (उसका कथन/अर्थ) से मिलान कीजिए। सूची I: A. कक्षाओं का नियम; B. क्षेत्रफलों का नियम; C. आवर्तकालों का नियम; D. वह राशि जो नियत रहती है और क्षेत्रफलों के नियम को जन्म देती है। सूची II: 1. कक्षीय आवर्तकाल का वर्ग दीर्घ अर्धअक्ष के घन के अनुक्रमानुपाती होता है; 2. किसी ग्रह की कक्षा एक दीर्घवृत्त होती है जिसके एक फोकस पर सूर्य होता है; 3. सूर्य के परितः ग्रह का कोणीय संवेग; 4. ग्रह का क्षेत्रीय वेग। सही मिलान चुनिए।
- A. A-1, B-4, C-2, D-3
- B. A-2, B-1, C-4, D-3
- C. A-2, B-4, C-1, D-3
- D. A-2, B-3, C-1, D-4
Solution
The law of orbits is the ellipse statement (A-2), the law of areas is the constant-areal-velocity statement (B-4), the law of periods is T² ∝ a³ (C-1), and the law of areas follows from conservation of angular momentum (D-3).
कक्षाओं का नियम दीर्घवृत्त वाला कथन है (A-2), क्षेत्रफलों का नियम नियत-क्षेत्रीय-वेग वाला कथन है (B-4), आवर्तकालों का नियम T² ∝ a³ है (C-1), और क्षेत्रफलों का नियम कोणीय संवेग के संरक्षण से प्राप्त होता है (D-3)।
Q2. In which year did Isaac Newton publish his law of universal gravitation in the Philosophiæ Naturalis Principia Mathematica?
आइज़क न्यूटन ने अपना सार्वत्रिक गुरुत्वाकर्षण का नियम 'Philosophiæ Naturalis Principia Mathematica' में किस वर्ष प्रकाशित किया था?
- A. 1704
- B. 1665
- C. 1609
- D. 1687
Solution
Newton's Principia, containing the law of universal gravitation, was published in 1687.
न्यूटन का प्रिंसिपिया, जिसमें सार्वत्रिक गुरुत्वाकर्षण का नियम सम्मिलित था, 1687 में प्रकाशित हुआ था।
Q3. The approximate value of the universal gravitational constant G in SI units is:
SI मात्रकों में सार्वत्रिक गुरुत्वाकर्षण नियतांक G का अनुमानित मान है:
- A. 6.67×10⁻¹¹ N m² kg⁻²
- B. 9.8×10⁻¹¹ N m² kg⁻²
- C. 6.67×10⁻⁹ N m² kg⁻²
- D. 6.67×10⁻¹² N m² kg⁻²
Solution
The accepted value of G is about 6.67×10⁻¹¹ N m² kg⁻²; the other magnitudes do not correspond to the measured value.
G का स्वीकृत मान लगभग 6.67×10⁻¹¹ N m² kg⁻² है; अन्य परिमाण मापित मान के अनुरूप नहीं हैं।
Frequently asked questions
How many questions are in the JEE Main Mechanics: Gravitation – Chapter Test?
20 questions for 20 marks, to be answered in 20 minutes.
Is there negative marking in the JEE Main Mechanics: Gravitation – Chapter Test?
Yes — 0.25 marks are deducted for each wrong answer, as in the real exam pattern.
Which topics does the JEE Main Mechanics: Gravitation – Chapter Test cover?
Mechanics (20 questions).
Is the JEE Main Mechanics: Gravitation – Chapter Test free?
It is part of the JEE Main 2027 Mock Test Series (104 tests, ₹299). You can first try Basic Concepts & Atomic Structure – Topic Test for free.
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