CUET · PHYSICS · PYQ PAPER 2023
Which of the following statements are correct?
A. The various lines in the atomic spectra are produced when electrons jump from higher energy state to a lower energy state.
B. An accelerated atomic electron must spiral into the nucleus as it losses energy.
C. Rutherford scattering determines an upper limit to the size of the nucleus.
D. Angular momentum of the electron orbiting around the nucleus is not quantised.
- A A, C and D Only
- B B, C and D Only
- C A, B and D Only
- D A, B and C Only
Answer & Solution
Correct Answer
(D) A, B and C Only
Step-by-step Solution
Detailed explanation
A. Correct. Electron transition from higher to lower energy state emits photons. B. Correct. Classical prediction: accelerating electron radiates energy and spirals into nucleus. C. Correct. Rutherford scattering provides upper limit for nucleus size. D. Incorrect. Electron…
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