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 19RE19 R_E from the center. What is its orbital speed? (g=9.8 m/s2,RE=6.4×106 mg = 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.

0
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Medium
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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 19RE19 R_E from the center. What is its orbital speed? (g=9.8 m/s2,RE=6.4×106 mg = 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 km/s1 \, \text{km/s} from Earth’s surface. What is its maximum distance from the center? (Escape speed = 11.2 km/s,RE=6.4×106 m11.2 \, \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 km/s9 \, \text{km/s} from Earth’s surface. What is its maximum distance from the center? (Escape speed = 11.2 km/s,RE=6.4×106 m11.2 \, \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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