What is the energy of a photon whose wavelength is 6840 Å?
A. 1.81 eV
B. 3.6 eV
C. – 13.6 eV
D. 12.1 eV
Answer:A
What is the energy of a photon whose wavelength is 6840 Å?
A. 1.81 eV B. 3.6 eV C. – 13.6 eV D. 12.1 eV