What are nuclei with the same mass number but different atomic numbers called?
Correct answer A. Isobars
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Physics MCQs
Page 25 of Physics multiple-choice questions with answers. Tap an option to check yourself.
Page 25 of 45
What is the mass of a neutron?
Correct answer C. 1.67 × 10⁻²⁷ kg
What is a particle with the mass of an electron and the charge of a proton called?
Correct answer A. Positron
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What is the charge on a neutron?
Correct answer B. Zero
Who determined the charge on the electron?
Correct answer B. Millikan
Which of these radiations travels with the greatest speed?
Correct answer C. γ-rays
Which rods are inserted into a nuclear reactor to control the fission chain reaction?
Correct answer D. Cadmium rods
What is the average energy needed to remove one nucleon from a nucleus called?
Correct answer A. Binding energy per nucleon
Which law does radioactive decay follow?
Correct answer D. N = N₀e^(-λt)
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What is the approximate diameter of an atom?
Correct answer C. 10⁻¹⁰ m
What particle is produced when nitrogen is bombarded with alpha particles?
Correct answer A. Proton
What is the mass defect per nucleon called?
Correct answer C. Packing fraction
Between which particles do nuclear forces act?
Correct answer D. All of the above
What atomic numbers do transuranic elements have?
Correct answer D. Greater than 92
How much energy is released when a single U-235 atom undergoes fission?
Correct answer A. 200 MeV
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Which statement about electrons and the nucleus is correct?
Correct answer A. They cannot exist inside the nucleus
Which of these radiations has the greatest penetrating power?
Correct answer C. γ-rays
What are neutrons and protons collectively called?
Correct answer C. Nucleons
Which particles make up antimatter?
Correct answer D. All of the above
For a chain reaction to build up, how large should the fissile target be?
Correct answer B. Greater than the critical size