STANDARDPhysics-Nuclear Physics
STANDARD Physics Mass Defect MCQ Question
Type: MCQ-conceptual-Medium
Let mₚ be the mass of a proton, mₙ the mass of a neutron, M₁ the mass of a ²⁰₁₀Ne nucleus and M₂ the mass of a ⁴⁰₂₀Ca nucleus. Then
A
M₂ = M₁
B
M₂ > 2M₁
C
M₂ < 2M₁
D
M₁ < 10 (mₙ + mₚ)
Correct Answer
Option D
Detailed Explanation
Due to mass defect, the rest mass of a nucleus is always less than the sum of the rest masses of its constituent nucleons. ¹⁰₂₀Ne nucleus consists of 10 protons and 10 neutrons. M₁ < 10 (mₚ + mₙ).
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