A) 5.89nm
B) 589 nm
C) 58.9 nm
D) 5890 nm
Correct Answer: B
Solution :
Wavelength \[(\lambda )=\frac{velocity\text{ }of\text{ }light\text{ }(c)}{frequency\text{ }(v)}\] \[\lambda ==\frac{3\times {{10}^{8}}m/s}{5.09\times {{10}^{14}}{{s}^{-1}}}\] \[=5.89\times {{10}^{-7}}m\] \[=589nm\]
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