Q. Which of the following elements are used in atomic clocks?- Cesium
- Rubidium
- Strontium
Select the correct option from the codes given below:
Answer:
1, 2 & 3
Notes: Cesium-133 is the basis of SI second and widely used in atomic clocks. Rubidium-87 atomic clocks are popular for their compactness and use in GPS. Strontium is employed in advanced optical lattice clocks, which surpass cesium in precision. All three elements have significant applications in atomic timekeeping technologies.