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Physics Mcqs

The unit of radioactivity curie is equal to_________________?

  • (A)  3.74 x 109 disintegration per sec
  • (B)  3.70 x 1010 disintegration per sec
  • (C)  3.55 x 1010 disintegration per sec
  • (D)  3.60 x 1010 disintegration per sec
Submitted By :Ali Uppal


Submitted By :Ali Uppal


Sum of the masses of constituent nucleons as compared to the mass of the resultant nucleus is______________?

  • (A)  Smaller
  • (B)  Greater than 82
  • (C)  Same
  • (D)  Sometimes smaller some times greater
Submitted By :Ali Uppal


A mass spectrograph (spectrometer) sorts out____________?

  • (A)  Molecules
  • (B)  Ions
  • (C)  Elements
  • (D)  Isotopes
Submitted By :Ali Uppal


Strontium-90 is used as __________________?

  • (A)  α-particle source
  • (B)  β-particle source
  • (C)  γ-rays source
  • (D)  Neutron source
Submitted By :Ali Uppal


An alpha particle in a single encounter__________________?

  • (A)  Loses a small fraction of its energy
  • (B)  Losses most of its energy
  • (C)  Loses no energy at all
  • (D)  Loses all of its energy
Submitted By :Ali Uppal


T.V sets and microwave ovens emit ___________________?

  • (A)  X-rays
  • (B)  α-rays
  • (C)  β-rays
  • (D)  γ-rays
Submitted By :Ali Uppal


Alpha particle ionizes an atom_________________?

  • (A)  Through direct collision
  • (B)  Through electrostatic attraction
  • (C)  Through electrostatic repulsion
  • (D)  All of above
Submitted By :Ali Uppal


The charge on alpha particles is________________?

  • (A)  Plus one
  • (B)  Plus two
  • (C)  Minus two
  • (D)  Minus one
Submitted By :Ali Uppal


Sterilization of surgical instruments medical supplies and bandages can be done by exposing them to a beam of_______________?

  • (A)  α-rays
  • (B)  β-rays
  • (C)  γ-rays
  • (D)  B and C have equal antiseptic propertie
Submitted By :Ali Uppal