Convert 700 nm, the wavelength of red light, to meters.

Question

Convert 700 nm, the wavelength of red light, to meters.

___m

Answer 1

1 nm = 10^-9 m

700 nm = 700* 10^-9 m

            = 7*10^-7 m

Answer 2

The prefix of nano means 10^-9, so 700 nm is 700 * 10^-9 m. As a decimal that's 0.0000007 m.