Question

Find the wavelength of incident light

Answer 1

Answer:

4) 1000 A

Explanation:

E = hc/λ

(18.2 + 1.6) * 10^-19 = 6.6 *10^-34* 3*10^8/λ

λ = (6.6*3)/19.8 * 10^-34 + 8 +19 = 1*10^7 = 1000 angstrom