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Indian Navy AA (Artificer Apprentice) Gravitation — practice questions

Explore 23 free Gravitation questions in Indian Navy AA (Artificer Apprentice) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Gravitation questions and exercises with answers

Showing questions 1–23 of 23.

Total energy of a satellite in circular orbit equals:Read the answer and worked solution →As per your syllabus, the gravitational PE for two particles of masses m₁ and m₂ separated by r is which?Read the answer and worked solution →Which planet has the higher surface gravity?Read the answer and worked solution →Conserved, or not conserved?Read the answer and worked solution →True or false: conservation under gravityRead the answer and worked solution →Complete the weightlessness explanationRead the answer and worked solution →True or false: weightlessnessRead the answer and worked solution →Kepler's third lawRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Tap every quantity conserved for orbital motionRead the answer and worked solution →Flip and pair: law with what it saysRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Order the reasoning: why an astronaut floatsRead the answer and worked solution →True or false: Kepler's lawsRead the answer and worked solution →Which law is being described?Read the answer and worked solution →Orbits and satellitesRead the answer and worked solution →Tap every true statement about orbital motionRead the answer and worked solution →Complete Kepler's third lawRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Flip and pair: statement with its subjectRead the answer and worked solution →Assertion and reason: orbitsRead the answer and worked solution →

Worked practice questions

Total energy of a satellite in circular orbit equals:

  1. Half of potential energy
  2. Twice the potential energy
  3. + Kinetic energy
  4. - Kinetic energy
Show answer and solution

Correct answer: D. - Kinetic energy

**For circular orbit:** KE = GMm/(2r), PE = -GMm/r, Total E = -GMm/(2r) = -KE. So total energy equals negative kinetic energy. Total is negative, indicating bound orbit.

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As per your syllabus, the gravitational PE for two particles of masses m₁ and m₂ separated by r is which?

  1. V = +G m₁ m₂ / r
  2. V = G m₁ m₂ / r²
  3. V = −G m₁ m₂ / r
  4. V = G (m₁ + m₂) / r
Show answer and solution

Correct answer: C. V = −G m₁ m₂ / r

Your syllabus: V = −Gm₁m₂/r. Convention V(∞) = 0.

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Which planet has the higher surface gravity?

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Questions
  1. A
    Earth (9.8 m/s²)
    B
    Moon (1.6 m/s²)
    Higher value
    Earth (9.8 m/s²)
  2. A
    Mars (3.7 m/s²)
    B
    Mercury (3.7 m/s²)
    Higher value
    Mars (3.7 m/s²)
  3. A
    Jupiter (24.8 m/s²)
    B
    Earth (9.8 m/s²)
    Higher value
    Jupiter (24.8 m/s²)
  4. A
    Venus (8.9 m/s²)
    B
    Saturn (10.4 m/s²)
    Higher value
    Saturn (10.4 m/s²)

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