NEET Physics: Gravitation — MCQ Test 11

Q6. Three masses of \( 18 \, \text{kg} \) each form an equilateral triangle with side \( 12 \, \text{m} \). What is the net force on one mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q7. What is the kinetic energy of a \( 800 \, \text{kg} \) satellite at \( 10 R_E \) from Earth’s center? (\( M_E = 6 \times 10^{24} \, \text{kg}, R_E = 6.4 \times 10^6 \, \text{m}, G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q8. A satellite orbits a planet at \( 2.5 \times 10^7 \, \text{m} \) from its center with a period of 5 hours. What is the planet’s mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q9. What role does the Sun play in planetary motion according to Kepler’s laws?

Q10. Which of Kepler’s laws implies that the gravitational force acting on a planet is a central force?

NEET Physics — Gravitation

Free MCQ Test 11 of 25

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A satellite orbits Earth at \( 17 R_E \) from the center. What is its orbital speed? (\( g = 9.8 \, \text{m/s}^2, R_E = 6.4 \times 10^6 \, \text{m} \))

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Gravitation. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Satellite, Equilateral, Triangle, Planetary, According, and Gravitational.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. A satellite orbits Earth at \( 17 R_E \) from the center. What is its orbital speed? (\( g = 9.8 \, \text{m/s}^2, R_E = 6.4 \times 10^6 \, \text{m} \))

  • A. 1.9 × 10³ m/s
  • B. 2.0 × 10³ m/s
  • C. 2.1 × 10³ m/s
  • D. 2.2 × 10³ m/s

Q2. A planet has an orbital period of 4 years around the Sun. If Earth’s orbital radius is \( 1.5 \times 10^{11} \, \text{m} \), what is the planet’s semi-major axis? (\( 1 \, \text{year} = 3.156 \times 10^7 \, \text{s} \))

  • A. 3.5 × 10¹¹ m
  • B. 3.8 × 10¹¹ m
  • C. 4.0 × 10¹¹ m
  • D. 4.2 × 10¹¹ m

Q3. A body weighs \( 245 \, \text{N} \) on Earth’s surface. What is its weight at a depth \( d = R_E/5 \)? (\( g = 9.8 \, \text{m/s}^2 \))

  • A. 190 N
  • B. 194 N
  • C. 196 N
  • D. 200 N

Q4. A satellite near Earth has a period of 90 minutes. What is its period at \( h = 3 R_E \)? (\( R_E = 6.4 \times 10^6 \, \text{m} \))

  • A. 700 min
  • B. 710 min
  • C. 720 min
  • D. 730 min

Q5. A planet orbits the Sun with a period of 6 years. If Earth’s orbital radius is \( 1.5 \times 10^{11} \, \text{m} \), what is its semi-major axis?

  • A. 4.8 × 10¹¹ m
  • B. 4.9 × 10¹¹ m
  • C. 5.0 × 10¹¹ m
  • D. 5.1 × 10¹¹ m

+ 5 more questions in the actual test

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