NEET Physics: Gravitation — MCQ Test 19

Q6. A \( 250 \, \text{kg} \) satellite orbits Earth at \( 6 R_E \) from the center. What is its total energy? (\( M_E = 6 \times 10^{24} \, \text{kg}, R_E = 6.4 \times 10^6 \, \text{m}, G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q7. What is the significance of the negative sign in the gravitational potential energy formula \( V = -\frac{G M m}{r} \)?

Q8. At what height above Earth’s surface is \( g \) reduced to \( 7.84 \, \text{m/s}^2 \)? (\( g_0 = 9.8 \, \text{m/s}^2, R_E = 6.4 \times 10^6 \, \text{m} \))

Q9. A satellite orbits Earth at \( 11 R_E \) from the center. What is its orbital speed? (\( g = 9.8 \, \text{m/s}^2, R_E = 6.4 \times 10^6 \, \text{m} \))

Q10. Four \( 7 \, \text{kg} \) masses form a square of side \( 7 \, \text{m} \). What is the potential energy of the system? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

NEET Physics — Gravitation

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A satellite orbits Earth at \( 19 R_E \) 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, Projectile, Launched, Distance, Following, and Statements.

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 \( 19 R_E \) 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. 1.8 × 10³ m/s
  • B. 1.9 × 10³ m/s
  • C. 2.0 × 10³ m/s
  • D. 2.1 × 10³ m/s

Q2. A projectile is launched at \( 1 \, \text{km/s} \) from Earth’s surface. What is its maximum distance from the center? (Escape speed = \( 11.2 \, \text{km/s}, R_E = 6.4 \times 10^6 \, \text{m} \))

  • A. 6.4 × 10⁶ m
  • B. 6.5 × 10⁶ m
  • C. 6.6 × 10⁶ m
  • D. 6.7 × 10⁶ m

Q3. Which of the following statements is correct about the gravitational force inside a hollow spherical shell?

  • A. It increases toward the center
  • B. It is zero everywhere inside
  • C. It depends on the shell’s thickness
  • D. It acts outward from the center

Q4. A projectile is launched at \( 9 \, \text{km/s} \) from Earth’s surface. What is its maximum distance from the center? (Escape speed = \( 11.2 \, \text{km/s}, R_E = 6.4 \times 10^6 \, \text{m} \))

  • A. 1.7 × 10⁷ m
  • B. 1.8 × 10⁷ m
  • C. 1.9 × 10⁷ m
  • D. 2.0 × 10⁷ m

Q5. Why does the total energy of a satellite in an elliptical orbit remain constant?

  • A. Speed remains constant
  • B. Gravity is conservative
  • C. Orbit is circular
  • D. Mass decreases

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