General Science Class 9 MCQS

According to Newton's law of universal gravitation force ∝ :

  1. m1 m2
  2. 1/r2
  3. r2
  4. Both (a) and (b)

Gravitational force is always :

  1. Repulsive
  2. Attractive
  3. Both
  4. None of these

]Numerical value of ______ remains constant every where.

  1. g
  2. G
  3. F
  4. W

Gravitation force is ______ of the medium between the objects.

  1. Dependent
  2. Independent
  3. Both 'a' and 'b'
  4. None of these

Near Earth's surface g = :

  1. 10 ms^-2
  2. 1.6 ms^-1
  3. Both (a) and (b)
  4. None of these

Newton's law of gravitation is consistent with Newton's ____ law of motion.

  1. 1st
  2. 2nd
  3. 3rd
  4. All of them

Spring balance is used to measure :

  1. Mass
  2. Weight
  3. Elasticity
  4. Density

Your weight as measured on Earth will be _____ on Moon?

  1. Increased
  2. Decreased
  3. Remains same
  4. None of these

Mass of Earth is :

  1. 6.0 x 10^23 kg
  2. 6.0 x 10^24 kg
  3. 6.0 ´ 10^25 kg
  4. 6.0 ´ 10^26 kg

A communication satellite completes its one revolution around the Earth in ______ hours.

  1. 6
  2. 12
  3. 18
  4. 24

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