SAT - Science - Physics - Gravitation

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Question - 1

SI unit of gravitational constant is  ______ 

  • A N m2kg2
  • B N m2kg-2
  • C N m2s-2
  • D N mkg-2

Question - 2

What is the value of gravitational constant?

  • A 6.6734 x 10-11Nm2/kg2
  • B 6.6734 x 10-10Nm2/kg2
  • C 6.6734 x 10-11Nm/kg2
  • D 6.6734 x 10-11Nm2/kg

Question - 3

If the distance between two bodies is doubled, the force of attraction F between them will be ________ 

  • A 1/4F
  • B 2F 
  • C 1/2F
  • D F

Question - 4

The force of gravitation between two bodies in the universe does not depend on

  • A The distance between them
  • B The product of their masses
  • C The sum of their masses
  • D The gravitational constant

Question - 5

Name the fundamental force which holds the planets in their orbits around the sun.

  • A Gravitational force of attraction
  • B Electrostatic force of attraction
  • C Nuclear force of attraction
  • D Electrostatic force of attraction

Question - 6

When an object is thrown up, the force of gravity _____

  • A is opposite to the direction of motion
  • B is in the same direction as the direction of motion
  • C becomes zero at the highest point
  • D increases as it rises up

Question - 7

What is the final velocity of a body moving against gravity when it attains the maximum height?

  • A Zero
  • B u2/2g
  • C hit
  • D 2gh

Question - 8

The acceleration due to gravity is zero at __________

  • A The equator
  • B Poles
  • C Sea level
  • D The centre of the earth

Question - 9

If acceleration due to gravity on earth is 10 m/s2, then the acceleration due to gravity on moon is________

  • A 1.66 m/s2
  • B 16.6 m/s2
  • C 10 m/s2
  • D 0.166 m/s2

Question - 10

The second equation of motion for a freely falling body starting from rest is ______

  • A \(h=u+{1\over 2}gt^2\)
  • B \(h=u-{1\over 2}gt^2\)
  • C \(h={1\over 2}gt^2\)
  • D \(h=-{1\over 2}gt^2\)
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