10⁻¹⁵ second = ____
2021
10⁻¹⁵ second = ____
- A.
1 picosecond
- B.
1 attosecond
- C.
1 femtosecond
- D.
1 nanosecond
Attempted by 3 students.
Show answer & explanation
Correct answer: C
The question asks for the time unit equivalent to 10^-15 seconds.
In the International System of Units (SI), standard prefixes are used to denote powers of ten.
According to SI standard prefixes:
10^-9 s = nanosecond
10^-12 s = picosecond
10^-15 s = femtosecond
10^-18 s = attosecond
Therefore, 10^-15 seconds = 1 femtosecond.
Final Answer: Option 3 (1 femtosecond)