NEET Physics: Gravitation — MCQ Test 20

Q6. Two identical masses of \( 5 \, \text{kg} \) each are placed at the vertices A and B of an equilateral triangle ABC with side length \( 2 \, \text{m} \). What is the gravitational force on a \( 10 \, \text{kg} \) mass at vertex C? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q7. Four equal masses of \( 3 \, \text{kg} \) are at the vertices of a square with side \( 2 \, \text{m} \). What is the net force on one mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q8. How much energy is required to move a \( 500 \, \text{kg} \) satellite from \( 5 R_E \) to \( 10 R_E \) from Earth’s center? (\( M_E = 6 \times 10^{24} \, \text{kg}, R_E = 6.4 \times 10^6 \, \text{m}, G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q9. A \( 1100 \, \text{kg} \) satellite orbits Earth at \( 18 R_E \) from the center. What is its total energy? (\( M_E = 6 \times 10^{24} \, \text{kg}, R_E = 6.4 \times 10^6 \, \text{m}, G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

Q10. What is the gravitational force on a \( 10 \, \text{kg} \) mass \( 8 \, \text{m} \) from the center of a spherical shell of mass \( 450 \, \text{kg} \) and radius \( 6 \, \text{m} \)? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

NEET Physics — Gravitation

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Two masses \( 10 \, \text{kg} \) and \( 20 \, \text{kg} \) are \( 20 \, \text{m} \) apart. What is the gravitational potential at a point \( 9 \, \text{m} \) from the \( 10 \, \text{kg} \) mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

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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 Gravitational, Potential, Projectile, Launched, Infinity, and Following.

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.

Two masses \( 10 \, \text{kg} \) and \( 20 \, \text{kg} \) are \( 20 \, \text{m} \) apart. What is the gravitational potential at a point \( 9 \, \text{m} \) from the \( 10 \, \text{kg} \) mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \))

  • A.-1.9 × 10⁻¹⁰ J/kg
  • B.-2.0 × 10⁻¹⁰ J/kg
  • C.-2.1 × 10⁻¹⁰ J/kg
  • D.-2.2 × 10⁻¹⁰ J/kg
Q2.

A projectile is launched from Earth with a speed of \( 15 \, \text{km/s} \). What is its speed at infinity? (Escape speed = \( 11.2 \, \text{km/s} \))

  • A.8 km/s
  • B.10 km/s
  • C.12 km/s
  • D.14 km/s
Q3.

Which of the following statements is incorrect about gravitational force?

  • A.It can be zero at some points
  • B.It is always attractive
  • C.It decreases with the square of distance
  • D.It acts between all masses
Q4.

What is the key assumption about Earth’s density in calculating \( g \) below its surface?

  • A.It varies with depth
  • B.It is uniform
  • C.It decreases linearly
  • D.It is zero at the center
Q5.

At what height above Earth’s surface is \( g \) reduced to \( 8.82 \, \text{m/s}^2 \)? (\( g_0 = 9.8 \, \text{m/s}^2, R_E = 6.4 \times 10^6 \, \text{m} \))

  • A.3.2 × 10⁵ m
  • B.3.4 × 10⁵ m
  • C.3.5 × 10⁵ m
  • D.3.6 × 10⁵ m

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