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


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


Question: 4

The fuel used in nuclear power plants is

(A) U-235

(B) U-236

(C) U-238

(D) U-239

Ans: A


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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