Question

im doing this question where 350 nm needs to be converted to m on the answer key its is converted to 350E-9m but when i do it in my calculator i keep getting 3.5E-7m. which one is right?

Answer 1

Conversion to be used:

1 nm = 10^-9 m

So,

350 nm = 350*10^-9 m

which is same as 3.50*10^-7 m

Both 350*10^-9 and 3.50*10^-7 are correct. They are essentially the same value