3. How many photons of wavelength 1 = 450 nm does it take to achieve pressure p = 105 Pa in an empty cubical box of edge length l = 10 cm? Inner surfaces of all the faces of the box are perfectly reflecting. Plank's constant is h = 6.67 x 10-34 J.s and speed of light isc = 3 x 108 m/s. %3D %3D 20 %3D
3. How many photons of wavelength 1 = 450 nm does it take to achieve pressure p = 105 Pa in an empty cubical box of edge length l = 10 cm? Inner surfaces of all the faces of the box are perfectly reflecting. Plank's constant is h = 6.67 x 10-34 J.s and speed of light isc = 3 x 108 m/s. %3D %3D 20 %3D
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Transcribed Image Text:8. How many photons of wavelength A = 450 nm does it take to achieve
pressure p = 105 Pa in an empty cubical box of edge length l = 10 cm?
Inner surfaces of all the faces of the box are perfectly reflecting. Plank's
constant is h = 6.67 × 10-34 J.s and speed of light is c = 3 x 108 m/s.
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