Atomic Nucleus|. Practice MCQs Physics for Mdcat By Engr. Kamran Soomro | mosaicbro.com

Atomic Nucleus|. Practice MCQs Physics for Mdcat By Engr. Kamran Soomro

7 of 114 questions (Page 5 of 17)

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29 A mass spectrograph (Spectrometer) sorts out:
Correct Answer: D
Explanation: Mass spectrometers separate isotopes based on their mass-to-charge ratios.
30 The chemical behaviour of an atom is determined by:
Correct Answer: C
Explanation: The atomic number (number of protons) defines an element's chemical properties.
31 The mass of a positron is equal to the mass of:
Correct Answer: D
Explanation: A positron has the same mass as an electron but opposite charge.
32 Nuclear force is:
Correct Answer: C
Explanation: Nuclear forces are strong but act only over very short distances.
33 The sum of the masses of constituent nucleons as compared to the mass of the resultant nucleus is:
Correct Answer: B
Explanation: The mass of a nucleus is less than the sum of its nucleons due to binding energy (mass defect).
34 The amount of energy required to break the nucleus is called its:
Correct Answer: D
Explanation: Binding energy holds nucleons together; it must be overcome to split the nucleus.
35 The amount of energy equivalent to 1 amu is:
Correct Answer: C
Explanation: $1 \text{amu} \approx 931.5 \text{MeV}$ by mass-energy equivalence ($E=mc^2$).
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