How does the penetrating power of an alpha particle compare with that of a beta particle?
Correct answer A. 100 times less
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Physics MCQs
Page 24 of Physics multiple-choice questions with answers. Tap an option to check yourself.
Page 24 of 45
For what type of radiation is strontium-90 used as a source?
Correct answer B. β-particle source
How much of its energy does an alpha particle lose in a single encounter?
Correct answer A. A small fraction of its energy
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What kind of radiation can TV sets and microwave ovens emit?
Correct answer C. X-rays
How does an alpha particle ionise an atom?
Correct answer C. Through electrostatic attraction
What is the charge on an alpha particle?
Correct answer D. Plus two
Surgical instruments, medical supplies and bandages can be sterilised by exposing them to a beam of which radiation?
Correct answer C. γ-rays
Which radioisotope is used to treat various types of cancer?
Correct answer A. Cobalt-60
Which radiation is suitable for treating an infection deep inside the body?
Correct answer A. γ-rays
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What does the path of an alpha particle look like?
Correct answer B. Rectilinear
When an alpha particle encounters an atom, what does it knock out?
Correct answer B. Electrons
Why must pair production occur near a heavy nucleus?
Correct answer D. All of the above
If one or more neutrons released in fission go on to cause further fissions so that the process sustains itself, what is it called?
Correct answer D. Chain reaction
Radioactive materials can be identified by measuring which property?
Correct answer A. Half-life
Which isotope of uranium is used in a liquid metal fast breeder reactor?
Correct answer D. ²³⁸U (Z = 92)
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What is released in large amounts during nuclear fission?
Correct answer C. Nuclear energy
The curie, a unit of radioactivity, is equal to how many disintegrations per second?
Correct answer B. 3.70 × 10¹⁰ disintegrations per second
Radium-226 (atomic number 88) emits an alpha particle. What are the mass number and atomic number of the daughter nucleus?
Correct answer C. 222 and 86
How does the total mass of the separate nucleons compare with the mass of the nucleus they form?
Correct answer A. Greater
What does a mass spectrograph (spectrometer) sort out?
Correct answer D. Isotopes