Lasers can be used to generate pulses of light whose durations are as short as 15 fs. (a) How many wavelengths of light (λ = 530 nm) are contained in such a pulse? (Round your answer down to an integer.) (b) In what is the missing quantity X (in years)? (a) Number Enter your answer for part (a) in accordance to the question statement UnitsChoose the answer for part (a) from the menu in accordance to the question statement (b) Number Enter your answer for part (b) in accordance to the question statement UnitsChoose the answer for part (b) from the menu in accordance to the question statement