Question

veure e end us crass on the due date. No late submissions will be accepted. 1. A neon lamp emits red light. If the energy levels for the Ne atom were not quantized, however, a neon lamp would emit white light. Explain why this is so. 2. For the following 4 questions, you must show your work to receive full credit: a. Calculate the frequency of a photon whose wavelength is 659 nm. b. What is the energy of a photon whose wavelength is 784 nm? c. Calculate the wavelength, in m, of a photon whose energy is 2.3 10-19 J. d. Calculate the energy of a photon whose wavelength is 637 nm/cycle,

Answer 1

8.23 a] Frequency (0) = c (Velocity of electromagnetic wour) Woerlength (2) = 3x108 mis 659x109 m V=4.55 X 10 14 cans a I b Energy = he = 6.6x10 -34. 43x108 mis 784 X10-9 m. Ans by Energy = 2.581019 I a t - b) Energy = hc o n = het = 6.6810 34 x 34108 2-3x10-19 Energy Ans - no=860x109 m. Wavelength a = 860nm. d) Energy = nhe Here wowelength is 637 nmlcycle Energy = 1x 6-6x10 3 X 3x108 mis - 6376109 Energy = 3-181019J. inala Ans d

Date: 9.23 a] Frequency (D = c (Velocity of electromagnetic wave - Woerlength (2) = 34108 m/s 659x109 m V=4.55 X 1014 cons q -> ben b Energy = hc C ar = 6.6x10-34. 434108 mis 784 x 10-9 m. 3. 2-5 X10'9 J ons b-> Energy D E ) Energy = hc a = hc Energy yy = 6-671034 x 3x108 23X10" 2-3x10-19 Ans - = 860 8109 m Wavelength as = 860nm. - A) -44 = h h Here wowelingth is 637 nmlcycle na lang Energy = 1x 6-6610 3 X 3x108 mis! 6378109 Energy = 3-181019]. Ans d