CBSE Class 12-science Answered
Ques 9 a part(circled one)
Asked by lovemaan5500 | 21 Feb, 2020, 10:09: PM
Expert Answer
Energy = 2.1 eV = 2.1 × 1.602 × 10-19 J
wavelength is obtained from, E = hc/λ
Hence we get λ = hc/E = ( 6.626×10-34 × 3 × 108 ) / ( 1.602 × 10-19 ) = 1241 nm
Answered by Thiyagarajan K | 22 Feb, 2020, 10:04: AM
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