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Physics Mcqs

The fission chain reaction in a nuclear reactor can be controlled by introducing _______________?

  • (A)  Iron rods
  • (B)  Graphite rods
  • (C)  Cadmium rods
  • (D)  Platinum rods
Submitted By :Ali Uppal


Average energy required to remove one nucleon from the nucleus is called__________________?

  • (A)  Binding energy per nucleon
  • (B)  Energy of decay
  • (C)  Destruction energy
  • (D)  All of above
Submitted By :Ali Uppal


Radioactive decay obeys which one of the following law ?

  • (A)  N=Noe-λt
  • (B)  N=Noeλt
  • (C)  N=Noe-λt/2
  • (D)  No=N(1+eλt)
Submitted By :Ali Uppal


The diameter of an atom is approximately_______________?

  • (A)  10-12m
  • (B)  10-11m
  • (C)  10-10m
  • (D)  10-14m
Submitted By :Ali Uppal


Pair production takes place in the vicinity of a heavy nucleus so that_____________?

  • (A)  Net energy is conserved
  • (B)  Net charge is conserved
  • (C)  Net momentum is conserved
  • (D)  All of the above
Submitted By :Ali Uppal


Submitted By :Ali Uppal


Radioactive materials can be identified by measuring their_______________?

  • (A)  Hardness
  • (B)  Density
  • (C)  Mass
  • (D)  Half life
Submitted By :Ali Uppal


Submitted By :Ali Uppal


During the fission process a large amount of______________?

  • (A)  Heat energy is released
  • (B)  Nuclear energy is released
  • (C)  Chemical energy is released
  • (D)  Light energy is released
Submitted By :Ali Uppal


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