NEET Physics: Gravitation — MCQ Test 2

Q6. Two masses \( 7 \, \text{kg} \) and \( 14 \, \text{kg} \) are \( 14 \, \text{m} \) apart. What is the gravitational potential at a point \( 6 \, \text{m} \) from the \( 7 \, \text{kg} \) mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q7. A \( 6 \, \text{kg} \) mass is moved from \( 6 R_E \) to \( 12 R_E \) from Earth’s center. What is the change in potential energy? (\( M_E = 6 \times 10^{24} \, \text{kg}, R_E = 6.4 \times 10^6 \, \text{m}, G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q8. A \( 4 \, \text{kg} \) mass is moved from \( 3 R_E \) to \( 6 R_E \) from Earth’s center. What is the change in potential energy? (\( M_E = 6 \times 10^{24} \, \text{kg}, R_E = 6.4 \times 10^6 \, \text{m}, G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q9. A body weighs \( 98 \, \text{N} \) on Earth’s surface. What is its weight at a height \( h = 2 R_E/3 \)? (\( g = 9.8 \, \text{m/s}^2, R_E = 6.4 \times 10^6 \, \text{m} \))

Q10. What happens to the acceleration due to gravity at Earth’s center?

Q11. A projectile is launched from Earth’s surface with speed \( 8 \, \text{km/s} \). How far from the center does it reach? (Escape speed = \( 11.2 \, \text{km/s}, R_E = 6.4 \times 10^6 \, \text{m} \))

Q12. What is the gravitational potential due to Earth at \( 2.56 \times 10^7 \, \text{m} \) from its center? (\( M_E = 6 \times 10^{24} \, \text{kg}, G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q13. A projectile is launched at \( 4 \, \text{km/s} \) from Earth’s surface. What is its maximum distance from the center? (Escape speed = \( 11.2 \, \text{km/s}, R_E = 6.4 \times 10^6 \, \text{m} \))

Q14. A satellite orbits a planet at \( 5 \times 10^7 \, \text{m} \) from its center with a period of 12 hours. What is the planet’s mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q15. A \( 400 \, \text{kg} \) satellite orbits Earth at \( 5 R_E \) from the center. What is its total energy? (\( M_E = 6 \times 10^{24} \, \text{kg}, R_E = 6.4 \times 10^6 \, \text{m}, G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

NEET Physics — Gravitation

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A satellite near Earth has a period of 83 minutes. What is its period at \( h = 8 R_E \)? (\( R_E = 6.4 \times 10^6 \, \text{m} \))

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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 15 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, Acceleration, Decrease, Following, Statements, and Incorrect.

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 near Earth has a period of 83 minutes. What is its period at \( h = 8 R_E \)? (\( R_E = 6.4 \times 10^6 \, \text{m} \))

  • A. 2220 min
  • B. 2230 min
  • C. 2240 min
  • D. 2250 min

Q2. A satellite orbits Earth at \( 13 R_E \) 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. 2.1 × 10³ m/s
  • B. 2.2 × 10³ m/s
  • C. 2.3 × 10³ m/s
  • D. 2.4 × 10³ m/s

Q3. Why does the acceleration due to gravity decrease both above and below Earth’s surface?

  • A. Due to Earth’s rotation
  • B. Due to varying mass distribution
  • C. Due to distance and mass contribution effects
  • D. Due to atmospheric pressure

Q4. Which of the following statements is incorrect about a satellite in orbit?

  • A. Total energy is negative in circular orbit
  • B. Kinetic energy varies in elliptical orbit
  • C. Gravitational force keeps it in orbit
  • D. Speed increases with altitude

Q5. Four \( 3 \, \text{kg} \) masses form a square of side \( 3 \, \text{m} \). What is the potential energy of the system? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

  • A. -1.0 × 10⁻⁹ J
  • B. -1.1 × 10⁻⁹ J
  • C. -1.2 × 10⁻⁹ J
  • D. -1.3 × 10⁻⁹ J

+ 10 more questions in the actual test

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