AIPMT | 2014Atomic StructureHard

Question

Calculate the energy in joule corresponding to light of wavelength 45 nm : (Planck′s constant h = 6.63 × 10-34 Js; speed of light c = 3 × 108 ms-1)

Options

A.6.67 × 10ms15
B.6.67 × 10ms11
C.4.42 × 10ms-15
D.4.42 × 10ms-18

Solution

E =
= 4.42 × 10-18 J

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