NEET Physics: Gravitation — MCQ Test 7

Q6. What is the gravitational force on a \( 8 \, \text{kg} \) mass \( 5 \, \text{m} \) from the center of a spherical shell of mass \( 400 \, \text{kg} \) and radius \( 3 \, \text{m} \)? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q7. A projectile is launched at \( 2 \, \text{km/s} \) from Earth’s surface. What is its maximum distance from the center? (Escape speed = \( 11.2 \, \text{km/s}, R_E = 6.4 \times 10^6 \, \text{m} \))

Q8. A \( 9 \, \text{kg} \) mass is moved from \( 9 R_E \) to \( 18 R_E \) 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. At what depth below Earth’s surface is \( g \) reduced to \( 8.33 \, \text{m/s}^2 \)? (\( g_0 = 9.8 \, \text{m/s}^2, R_E = 6.4 \times 10^6 \, \text{m} \))

Q10. Why does Newton’s law of gravitation apply universally to all objects?

NEET Physics — Gravitation

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A satellite orbits a planet at 6×107 m6 \times 10^7 \, \text{m} from its center with a period of 15 hours. What is the planet’s mass? (G=6.67×10−11 N m2/kg2G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2)

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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, Gravitational, and Decrease.

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 a planet at 6×107 m6 \times 10^7 \, \text{m} from its center with a period of 15 hours. What is the planet’s mass? (G=6.67×10−11 N m2/kg2G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2)

  • A.

    4.2 × 10²⁵ kg

  • B.

    4.3 × 10²⁵ kg

  • C.

    4.4 × 10²⁵ kg

  • D.

    4.5 × 10²⁵ kg

Q2.

A projectile is launched at 7 km/s7 \, \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.

    1.0 × 10⁷ m

  • B.

    1.1 × 10⁷ m

  • C.

    1.2 × 10⁷ m

  • D.

    1.3 × 10⁷ m

Q3.

What is the escape speed from a planet with mass 3×1024 kg3 \times 10^{24} \, \text{kg} and radius 4×106 m4 \times 10^6 \, \text{m}? (G=6.67×10−11 N m2/kg2G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2)

  • A.

    8 km/s

  • B.

    10 km/s

  • C.

    12 km/s

  • D.

    14 km/s

Q4.

Why does the gravitational force on a body inside Earth decrease linearly with depth?

  • A.

    Due to Earth’s rotation

  • B.

    Due to decreasing contributing mass

  • C.

    Due to atmospheric pressure

  • D.

    Due to the shell theorem

Q5.

Which of the following statements is incorrect about Kepler’s second law?

  • A.

    It implies angular momentum conservation

  • B.

    Planets move at constant speed

  • C.

    Area swept is constant over time

  • D.

    It applies to elliptical orbits

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