The energy of a photon is `3 xx 10^(-12)` ergs. What is its wavelength in nm?
`(h = 6.62 xx 10^(-27) erg sec, c = 3 xx 10^(10) cm s^(-1))`

Options

A. 662
B. 1324
C. `66.2`
D. `6.62`

Answer

A