Quiz on Gravitation for Class 9

The gravitational force between two objects is inversely proportional to:

• The distance between them

• The square of the distance between them

• The cube of the distance between them

• The mass of the objects

The force of gravitation between two bodies depends on:

• Their masses

• The distance between them

• Both (a) and (b)

• None of the above

Gravitational force acts:

• Only between heavy objects

• Only on planets

• Between any two bodies with mass

• Between charged particles

The value of acceleration due to gravity (g) on the surface of Earth is approximately:

• 6.67 m/s²

• 8.9 m/s²

• 9.8 m/s²

• 10.5 m/s²

What is the SI unit of gravitational constant (G)?

• N m²/kg²

• N/kg²

• N m²/kg

• kg m²/N²

The mass of an object on the moon compared to its mass on Earth will be:

• Same

• Six +mes less

• Six +mes more

• Twice as much

The weight of an object on the moon is about:

• Twice its weight on Earth

• Same as its weight on Earth

• One-sixth of its weight on Earth

• One-third of its weight on Earth

What is the force of gravitation between two 1 kg masses kept 1 meter apart? (G = 6.67 × 10⁻¹¹ N m²/kg²):

• 6.67 × 10⁻¹¹ N

• 6.67 × 10⁻⁸ N

• 6.67 × 10⁻⁷ N

• 6.67 × 10⁻⁹ N

Which of the following planets has the largest gravitational pull?

• Mars

• Earth

• Jupiter

• Venus

The formula for gravitational force is:

• F = Gm₁m₂/r

• F = Gm₁m₂/r²

• F = Gm₁r²/m₂

• F = Gm₁/m₂