Q. Atomic clocks can be used for which of the following purposes:

1. GPS navigation
2. Internet synchronization
3. Determining the accurate position of planets

Select the correct answer using the codes given below:
Answer: 1, 2 & 3
Notes: Atomic clocks provide highly precise timekeeping essential for GPS navigation, synchronizing internet networks, and accurately measuring planetary positions for space missions. Their accuracy is based on atomic resonance frequencies, enabling reliable global navigation, scientific measurement, and communication applications. All three listed uses depend directly on the precision provided by atomic clocks.