Question

6. For the most accurate time measurement

are being used.​

Answer 1

• Option (B) is correct because a clock can measure time correctly up to one second. A stopwatch can measure time correctly up to a fraction of a second. A digital watch can measure time up to a fraction of second whereas an atomic clock is the most accurate timekeeper and is based on characteristic frequencies of radiation emitted by certain atoms having a precision of about 1 second in 300,000 years. So an atomic clock can measure time most precisely as the precision of this clock is about 1s in 10
• Option (B) is correct because a clock can measure time correctly up to one second. A stopwatch can measure time correctly up to a fraction of a second. A digital watch can measure time up to a fraction of second whereas an atomic clock is the most accurate timekeeper and is based on characteristic frequencies of radiation emitted by certain atoms having a precision of about 1 second in 300,000 years. So an atomic clock can measure time most precisely as the precision of this clock is about 1s in 10 13
• Option (B) is correct because a clock can measure time correctly up to one second. A stopwatch can measure time correctly up to a fraction of a second. A digital watch can measure time up to a fraction of second whereas an atomic clock is the most accurate timekeeper and is based on characteristic frequencies of radiation emitted by certain atoms having a precision of about 1 second in 300,000 years. So an atomic clock can measure time most precisely as the precision of this clock is about 1s in 10 13 s.