Structure of Atom - Result Question 1

####1. Calculate the energy in joule corresponding to light of wavelength 45nm :

(Planck’s constant h=6.63×10−34Js; speed of light c=3×108ms−1 )

(a) 6.67×1015

(b) 6.67×1011

(c) 4.42×10−15

(d) 4.42×10−18

[2014]

Show Answer

Solution:

  1. (d) E=hcλ=6.63×10−34×3×10845×10−9

=4.42×10−18J

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