NCERT/Class 9/Science/Gravitation

Gravitation

Class 9 · Science

17 questions6 easy7 medium4 hard

Sample Questions

Q1.What is the difference between mass and weight?

  • AMass is constant, weight changes with location
  • BMass and weight are the same
  • CWeight is constant, mass changes
  • DWeight is measured in kg, mass in N

Q2.What is the value of gravitational constant G?

  • A6.67 × 10^-11 N⋅m²/kg²
  • B9.8 m/s²
  • C10 N
  • D6.67 × 10^11 N⋅m²/kg²

Q3.What is the law of gravitation?

  • AEvery object attracts every other object with a force proportional to their masses and inversely proportional to the square of distance
  • BAll objects fall at the same speed
  • CHeavier objects attract lighter objects only
  • DGravity acts only on Earth

Q4.What does the inverse square law state?

  • AForce is inversely proportional to the square of distance
  • BForce is proportional to distance squared
  • CAll forces follow this law
  • DDistance decreases with force

Q5.What is the value of g on the Moon compared to Earth?

  • AAbout 1/6 of Earth's g
  • BSame as Earth
  • CAbout 6 times Earth's g
  • DZero

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
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Concepts Covered

Acceleration Due to GravityCentripetal ForceEarthEscape VelocityFree FallGravitationGravitational ConstantGravitational FieldGravitational ForceGravityInverse Square LawKepler's LawsMassMass and WeightMoon GravityNewton's LawsOrbital MotionSI UnitsUniversal GravitationWeightWeight and Mass

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