Assertion : Binding energy (or mass defect) o | vedclass

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(A) The nucleus of a hydrogen atom $(_{1}^{1}H)$ consists of only a single proton.Nuclear binding energy is defined as the energy required to disassem

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If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

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(A) The nucleus of a hydrogen atom $(_{1}^{1}H)$ consists of only a single proton.Nuclear binding energy is defined as the energy required to disassemble a nucleus into its constituent protons and neutrons (nucleons).Since a hydrogen nucleus contains only one nucleon (a proton),there are no other nucleons to bind with,and thus no nuclear force is acting to hold it together.Therefore,the binding energy and mass defect of a hydrogen nucleus are zero.Since the Assertion is true and the Reason correctly explains why the binding energy is zero (due to the presence of only one nucleon),the correct option is $A$.

Assertion : Binding energy (or mass defect) of hydrogen nucleus is zero.
Reason : Hydrogen nucleus contains only one nucleon.

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Assertion : Binding energy (or mass defect) of hydrogen nucleus is zero.Reason : Hydrogen nucleus contains only one nucleon.