A) 10
B) 25
C) 50
D) 75
Correct Answer: C
Solution :
Given, Plancks constant, |
\[h=6.63\times {{10}^{-34}}J-s\] |
Speed of light, \[c=3\times {{10}^{17}}nm\,{{s}^{-1}}\] |
Frequency of quanta |
\[v=6\times {{10}^{15}}{{s}^{-1}}\] |
Wavelength, \[\lambda =?\] |
We know that, \[v=\frac{c}{\lambda }\] |
or \[\lambda =\frac{c}{v}\] |
\[=\frac{3\times {{10}^{17}}}{6\times {{10}^{15}}}\] |
\[=0.5\times {{10}^{2}}\,nm\] |
\[=50\,nm\] |
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