Question

3. A laser emits photons having energy of 3.74 × 10^-19 J. What color would be expected for the light emitted by this laser? (c=3.00 × 10⁸ m / s, h=6.63 × 10^{-34} J · s)

a) violet

b) blue

c) green

d) yellow to orange

e) orange to red

4. What is the frequency of a photon having an energy of 9.08 × 10^{-16} J ? (c=3.00 × 10⁸ m / s, h=\right. \left.6.63 × 10^{-34} J · s)

a) 2.72 × 10^{-7} Hz

b) _______  2.43 × 10^{-27} Hz

c) 4.11 × 10^{26} Hz

d) 1.37 × 10^{18} Hz

e) 2.19 × 10^{-10} Hz

Answer 1