What is the electric field amplitude at a distance of 1.5 m from a 135 W lightbulb? Assume all the power of the bulb goes into light of a single color with λ = 500 nm and assume the bulb produces a spherical wave. Submit Answer Incorrect. Tries 2/10 Previous Tries
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- An infrared lamp has a wavelengh of 1230 nm. Solve for the frequency of the lamp if the speed of light is 3X108m/s. ans: 2.44X1014 Hz A UV light has a frequency of 8X1014Hz. solve for the wavelengh of the lamp if the speed of light is 3X108m/s. ans: 375nm Show Workwhat is the wavelength of light emitted from an LED lightbulb that has a frequency of 60 Hz is nm?Example The normalized radiation intensity of an antenna is defined by U(0) = sin(0), Find the: b. FNBW a. HPBW 270 300 1 240 330 210 180 150 Exam The r F a.
- 10² 106 Increasing frequency, f (Hz): 104 106 1 Radio waves (low f, longa) AM 104 10² Decreasing wavelength,λ (m) 108 FM TV 1 1010 Microwave Radar 10-2 10¹2 700 nm 10-4 1014 Infrared 10-6 600 nm 1016 Ultra- violet 10-8 Visible light 1018 X rays 10-10 500 nm 1020 1022 Gamma (y) waves (high f, short 2) 10-12 10-14 400 nm 1024Rerereces Electromagnetic Spectrum 1024 - Increasing Frequency (v) 1022 1020 1018 1016 1014 1012 1010 108 106 104 102 100 v (Hz) Y rays X rays UV IR Microwave FM AM Long radio waves Radio waves 10-16 10-14 10-12 10-10 10-8 104 10-2 10° 10? 1. 104 106 108 2 (m) Increasing Wavelength (1.) Visible spectrum 400 500 600 700 Increasing Wavelength (A) in nm → Work Functions of Metals Metal (eV) Na 2.46 Al 4.08 Cu 4.70 Zn 4.316
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