Modern Physics Multiple Choice Questions and Answers - 1
Question: 1
Curie is a unit of
(A) Radioactivity
(B) Energy of gamma rays
(C) Intensity of gamma rays
(D) Half-life
Ans: A
Radioactivity
Question: 2
Gamma rays are
(A) Electromagnetic waves
(B) Helium nucleus
(C) Fast moving electron
(D) Single ionized gas atom
Ans: A
Electromagnetic waves
Question: 3
Nuclear forces are mediated by
(A) Proton
(B) Neutron
(C) Meson
(D) Electron
Ans: C
Meson
Question: 4
The fuel used in nuclear power plants is
(A) U-235
(B) U-236
(C) U-238
(D) U-239
Ans: A
U-235
Question: 5
An atomic pile is used for
(A) Temperature
(B) Conducting nuclear fission
(C) Conducting thermonuclear fission
(D) Producing X-rays
Ans: B
Conducting nuclear fission
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