JEE Main 2026 — Nuclear Physics Question with Solution
JEE Main 2026 (05 April Shift 2)
Question
Assuming the experimental mass of as , the mass defect of atom is _______ .
(Mass of proton , mass of neutron , and is the speed of the light in vacuum).
(Mass of proton , mass of neutron , and is the speed of the light in vacuum).
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
The mass of protons is .
The mass of neutrons is .
Total mass of the constituent nucleons is .
The mass defect is the difference between the total mass of the nucleons and the experimental mass of the atom (ignoring electron mass as per the given data):
Converting the mass defect into :
Answer:
The mass of neutrons is .
Total mass of the constituent nucleons is .
The mass defect is the difference between the total mass of the nucleons and the experimental mass of the atom (ignoring electron mass as per the given data):
Converting the mass defect into :
Answer:
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This is a previous-year question from JEE Main 2026, covering the Nuclear Physics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.