Question
Download Solution PDFWhich of the following metal is used for the atomic standard of time?
Answer (Detailed Solution Below)
Option 2 : Cesium
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UPSC CDS 01/2025 General Knowledge Full Mock Test
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Detailed Solution
Download Solution PDFCONCEPT:
- Time standard: It is a specification for measuring time.
- It can be classified as the rate at which time passes.
- At the present time, We use an atomic standard of time.
- The periodic vibrations produced in a cesium atom are the basis for the atomic standard of time.
EXPLANATION:
- At the present time, We use an atomic standard of time.
- Hence the periodic vibrations produced in a cesium atom" are the basis for the atomic standard of time.
- So the correct answer is option 2.
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