Multiple choice general knowledge science & technology Which of the following prefixes represents 10 raised to the power of -15? deci(d) atto(a) femto(f) pico(p) Reveal answer Fill a bubble to check yourself C Correct answer Explanation Femto (f) is the SI prefix for 10^-15, commonly used in physics for extremely small measurements like femtoseconds (10^-15 seconds). Deci is 10^-1, pico is 10^-12, and atto is 10^-18, so none of these match the required power.