AIIMS 2017 Physics Basic Concepts Assertion Reason Question
Assertion: Photoelectric effect can take place only with an electron bound in the atom. Reason: Electron is a fermion whereas proton is a boson.
If both assertion and reason are true and reason is correct explanation of assertion.
If both assertion and reason are true and reason is not correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The assertion is true because the photoelectric effect occurs when photons impart enough energy to free electrons from their atomic bindings, demonstrating that only bound electrons can be ejected. The reason is also true, as electrons are indeed fermions (particles with half-integer spin) and protons are bosons (particles with integer spin), which relates to the behavior of particles in quantum mechanics. Option B is incorrect because the reason does provide a correct explanation for the assertion, while options C and D are incorrect as both the assertion and reason are true.
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