A) 10
B) 25
C) 50
D) 75
Correct Answer: C
Solution :
Given, Plancks constant, \[h=6.63\times {{10}^{-34}}\text{J-s}\] 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 \[\lambda =\frac{c}{v}\] \[=\frac{3\times {{10}^{17}}}{6\times {{10}^{15}}}\] \[=0.5\times {{10}^{2}}\,nm\] \[=50\,nm\]You need to login to perform this action.
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