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Home Questions & Answer Science Questions & Answers Physics Questions & Answers

Physics Questions & Answers (Compiled from UPSC, SSC ,PSC ,IBPS previous question papers)

  • What is newton third law of motion ?
  • AEvery body maintains its initial state rest or motion unless no external force is applied.
  • BThe rate of change in momentum of a body is directly proportional to the applied force on the body and takes place in the direction of force.
  • CTo every action there is equal and opposite reaction.
  • DNone of above.
  • What is displacement ?
  • ALongest distance covered by a body in a random direction.
  • BShortest distance covered by a body in a random direction.
  • CShortest distance covered by a body in a definite direction.
  • DLongest distance covered by a body in a definite direction.
  • Scalar Quantities are
  • Aphysical quantities which have magnitude only and no direction
  • Bphysical quantities which have no magnitude only and only direction
  • Cphysical quantities which have magnitude only and direction
  • Dphysical quantities which have no magnitude and no direction
  • Siphon will fail to work if
  • Aboth its limbs are of unequal length
  • Bthe temperature of the liquids in the two vessels are the same
  • Cthe level of the liquid in the two vessels are at the same height
  • Dthe densities of the liquid in the two vessels are equal
  • Radiocarbon is produced in the atmosphere as a result of
  • Acollision between fast neutrons and nitrogen nuclei present in the atmosphere
  • Baction of ultraviolet light from the sun on atmospheric oxygen
  • Caction of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
  • Dlightning discharge in atmosphere
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