Question

Wave # Frequency Wavelength
Wave 1 6.66 × 10 Hz 450 nm
Wave 2 5.77 × 10 Hz 520 nm
Wave 3 4.61 × 10 Hz 650 nm
Wave 4 4.28 × 10 Hz 700 nm
Which wave contains the lowest energy?
(1 point)
14
14
14
14
wave 2
wave 4
wave 3
wave 1

Answer 1

Wave 4.

Energy of a photon is E = hν (or E = hc/λ), so lower frequency (or longer wavelength) means lower energy. Wave 4 has the lowest frequency and the longest wavelength (700 nm), so it has the lowest energy.