Sakalam, a light-emitting device, requires 6917.82 ZW (Zeptowatt) of power every 500 milliseconds (ms). The energy of light being produced by Sakalam is equal to the amount of energy required to run the device at che given time. Refer to the given tables for the useful relations, necessary constants and definitions of variables, and colors corresponding to wavelengths of visible light.
Sakalam, a light-emitting device, requires 6917.82 ZW (Zeptowatt) of power every 500 milliseconds (ms). The energy of light being produced by Sakalam is equal to the amount of energy required to run the device at che given time. Refer to the given tables for the useful relations, necessary constants and definitions of variables, and colors corresponding to wavelengths of visible light.
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Transcribed Image Text:Sakalam, a light-emitting device, requires 6917.82 ZW (Zeptowatt) of power every 500 milliseconds (ms). The
energy of light being produced by Sakalam is equal to the amount of energy required to run the device at
che given time. Refer to the given tables for the useful relations, necessary constants and definitions of
variables, and colors corresponding to wavelengths of visible light.
Necessary Constants and
Definitions of Variables
Useful Relations
1 W (watt) = 1 J/s
1 W = 1021 ZW
1 Hz = 1 s' (per second)
1 ev = 1.6022 x 1018 J
Energy of photon of light (in eV) = hf
C = Af
c (speed of light) = 3.00 × 10° m/s
h (Planck's constant) = 4.136 x 1015
eV/Hz
f = frequency of light
A = wavelength of light
Wavelength (nm) Color
violet
blue
380 - 450
450 - 500
500 - 565
565 - 590
green
yellow
590 - 625
625 - 700
orange
red
a. How much energy (in Joules) is equivalent to the power required by Sakalam at the given time?
b. What is the wavelength of light (in nanometers, nm) being produced by Sakalam?
c. What is the color of the light being produced by Sakalam?
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