K-a rays are generated when transition of an electron occurs from:
Correct answer: C. L to K shell
- A. K to M shell
- B. N to K shell
- C. L to K shell
- D. M to L shell
Explanation
K-alpha (Kα) rays are a type of X-ray that is emitted when an electron transitions from a higher energy level to a lower energy level, specifically from the L shell (n=2) to the K shell (n=1). This transition occurs when an electron fills a vacancy in the K shell, resulting in the emission of a Kα X-ray.
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About Atomic Spectra
Atoms emit or absorb light at specific wavelengths because electrons occupy quantized energy levels and change levels by absorbing or releasing photons. The topic covers emission and absorption spectra, spectral series, hydrogen’s line spectrum, energy-level transitions, and the relation between wavelength, frequency and photon energy.
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