The principle of an atomic clock relies on the natural, constant frequency associated with transitions between different energy levels of atoms, which are independent of external conditions and thus provide a highly stable frequency standard.
Which one of the following correctly describes the principle of the working of an atomic clock?
Asked in UPSC CDS 1 2024 · Topic: Measuring Instruments and Scales (Stopwatch and principles of time measurement)
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Answer: C. Resonant frequency in cesium (or rubidium) atom
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