Questions
Calculate the energy in joule corresponding to light of wavelength 45 nm. (Planck's constant, h = 6.63 × Js , speed of light,
c = 3 ×108 ms-1)
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Correct option is D
E=hcλ Given, λ=45nm=45×10-9 mOn putting the given values in the equation, we get E=6.63×10-34×3×10845×10-9=4.42×10-18 JSimilar Questions
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