Question

The ratio of longest and shortest time intervals associated with events and objects in our universe is-
1. 1041
2. 10³⁹
3. 1040
4. 1042

Answer 1

Correct Answer - Option 1 : 1041

CONCEPT:

•  Time interval: It is the finite length of time marked off by two instants.
  • To measure a time interval we require a clock. Any phenomenon that repeats itself at regular intervals of time can serve as a clock.

EXPLANATION:

• Shortest time interval: Life span of most unstable particle = 10^-24 s
• Longest time interval: Age of the universe = 10¹⁷s

So the ratio of the longest and shortest time interval associated with events and objects in our universe is 10^-41.

Hence option 1) is correct