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NEET Class neet Answered

The value of Planck’s constant is 6.63 x 1034 Js. The velocity of light is 3.0 x 108 ms1. Which value is closest to the wavelength (in nanometres) of a quantum of light with frequency of 8 x 1015 s1? 1) 3 x 107 2) 2 x 1025 3) 5 x 1018 4) 4 x 101
Asked by khechetan | 03 Apr, 2021, 10:29: AM
answered-by-expert Expert Answer
This question is based on Planck's quantum theory.
 
Velocity equals space Frequency cross times Wavelength
straight c equals straight nu cross times straight lambda
straight lambda equals straight c over straight nu
straight lambda equals fraction numerator 3 cross times 10 to the power of 8 over denominator 8 cross times 10 to the power of 15 end fraction equals 0.375 cross times 10 to the power of negative 7 end exponent straight m equals space 3.75 cross times 10 to the power of 1 space nm


Hence comma space Wavelength space would space be space 4 cross times 10 to the power of 1 space nm
Answered by Ravi | 04 Apr, 2021, 05:36: PM
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