MCQEasyJEE 2023Wave-Particle Duality

JEE Physics 2023 Question with Solution

Given below are two statements: One is labelled as Assertion AA and the other is labelled as Reason RR Assertion AA: The beam of electrons shows wave nature and exhibits interference and diffraction. Reason RR: Davisson Germer experimentally verified the wave nature of electrons. In the light of the above statements, choose the most appropriate answer from the options given below:

  • A

    AA is correct but RR is not correct

  • B

    AA is not correct but RR is correct

  • C

    Both AA and RR are correct but RR is not the correct explanation of AA

  • D

    Both AA and RR are correct and RR is the correct explanation of AA

Answer

Correct answer:C

Step-by-step solution

Standard Method

Given: Assertion AA states that the beam of electrons shows wave nature and exhibits interference and diffraction. Reason RR states that Davisson Germer experimentally verified the wave nature of electrons.

Find: The most appropriate relation between Assertion AA and Reason RR.

Assertion AA is correct because electrons do show wave nature and hence can exhibit interference and diffraction.

Reason RR is also correct because the Davisson Germer experiment experimentally verified the wave nature of electrons.

Reason RR supports Assertion AA by providing the experimental verification of the wave nature of electrons.

Therefore, the correct option is C.

Explanation from the Given Statement

The solution states that the beam of electrons exhibits wave-like properties such as interference and diffraction, which confirms Assertion AA.

It also states that Davisson and Germer's experiment confirmed the wave nature of electrons, so Reason RR is correct.

Further, the solution explicitly says that Reason RR correctly explains Assertion AA, and then concludes: So, the correct answer is (C) Both A and R are correct and R is the correct explanation of A.

Hence, based on the solution, the answer is C.

Common mistakes

  • Assuming that because the written option text says 'correct explanation', the answer must be option DD. This is wrong here because the solution explicitly labels the correct option as C. Always resolve the final answer from the solution when provided.

  • Confusing the content of the option with its label. The statement 'Both AA and RR are correct and RR is the correct explanation of AA' appears as source option 44, but the solution maps the same statement to option C. Follow the final solution mapping rather than the listed options numbering alone.

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