NEET Physics: Gravitation — MCQ Test 18

Q6. Why does the gravitational potential decrease (become less negative) as altitude increases?

Q7. Why does the gravitational potential energy depend on the inverse of distance?

Q8. What is the gravitational potential at a point \( 9.6 \times 10^6 \, \text{m} \) from Earth’s center due to Earth? (\( M_E = 6 \times 10^{24} \, \text{kg}, G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q9. A moon orbits a planet with a period of 11 days and radius \( 8 \times 10^8 \, \text{m} \). What is the planet’s mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2, 1 \, \text{day} = 86400 \, \text{s} \))

Q10. What does the variation of \( g \) with altitude indicate about gravitational force?

NEET Physics — Gravitation

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A moon orbits a planet with a period of 6 days and radius \( 4 \times 10^8 \, \text{m} \). What is the planet’s mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2, 1 \, \text{day} = 86400 \, \text{s} \))

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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 Significance, Cavendish, Experiment, Understanding, Satellite, and Orbiting.

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 moon orbits a planet with a period of 6 days and radius \( 4 \times 10^8 \, \text{m} \). What is the planet’s mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2, 1 \, \text{day} = 86400 \, \text{s} \))

  • A. 1.3 × 10²⁵ kg
  • B. 1.4 × 10²⁵ kg
  • C. 1.5 × 10²⁵ kg
  • D. 1.6 × 10²⁵ kg

Q2. What is the significance of the Cavendish experiment in understanding gravity?

  • A. It discovered Kepler’s laws
  • B. It measured the gravitational constant
  • C. It proved Earth’s rotation
  • D. It determined escape speed

Q3. Why does a satellite in a higher orbit have a longer orbital period?

  • A. It moves faster
  • B. Gravitational force decreases
  • C. Its mass increases
  • D. Energy remains constant

Q4. A moon orbits a planet with a period of 12 days and radius \( 9 \times 10^8 \, \text{m} \). What is the planet’s mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2, 1 \, \text{day} = 86400 \, \text{s} \))

  • A. 3.9 × 10²⁵ kg
  • B. 4.0 × 10²⁵ kg
  • C. 4.1 × 10²⁵ kg
  • D. 4.2 × 10²⁵ kg

Q5. What is the total energy of a \( 100 \, \text{kg} \) satellite orbiting Earth at \( 3 R_E \) from the center? (\( M_E = 6 \times 10^{24} \, \text{kg}, R_E = 6.4 \times 10^6 \, \text{m}, G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

  • A. -0.9 × 10⁹ J
  • B. -1.0 × 10⁹ J
  • C. -1.2 × 10⁹ J
  • D. -1.4 × 10⁹ J

+ 5 more questions in the actual test

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