2. Please calculate absorbance for below a. a solution with a transmittance of 0.570 b. a solution with 43.5%T C. 0.084 mM benzene(aq) in a 5.00 cm cell if the molar absorptivity of benzene is 365. (1000 mM = 1 M) d. 59.5% of photons are transmitted through a cell
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- the n= tate. vels for Hydrogen. rbed photon? + tion from the thi 4. A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. a. What is the resistance of the light bulbs in ohms? b. What is the power consumed by the light bulb in watts? C. If two identical slide projectors are connected in parallel across the same 120 Volt source, what is the total current drawn from the source?Optoelectronics139. How much power (roughly) a light-emitting diode can couple into an optical fiber? a. 10 milliwatts b. 100 picowatts c. 100 microwatts d. 440 microwatts
- 3. What are K,L and M lines you discovered in the Moseley's law experi- ment ? 4. What is the Duane Hunt maximum x-ray frequency of a excitation voltage V = 6kV ? 5. Draw a basic shape of the x-ray absorption spectrum of a generic element, denote the Band a lines along with Duane-Hunt cutoffIn a CRT, electrons leave the filament as the current through the filament heats it upt. An anode then attracts the free electrons. According to Newton's second law of motion, the beam of electrons that emerges from the anode aperture will do this. a. Decelerate until they reach the fluorescent screen. b. Continue accelerating toward the flourescent screen. c. Spontaneoulsy decay into photons. d. Move at a constant speed toward the fluorescent screen.A monocrystalline silicon solar panel (active area: 1m2 )has an energy conversion efficiency of 20%. What is the power output when irradiance of 800 W/m2 is shining on the solar panel? a. 320 W. b. 80 W. c. 240 W. d. 160 W. e. 400 W.
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