A) Its wavelength and frequency both increase
B) Its wavelength increases but frequency remains unchanged
C) Its wavelength decreases but frequency remains unchanged
D) Its wavelength and frequency both decrease
Correct Answer: C
Solution :
\[f\propto \frac{1}{\lambda }\]. As \[{{\lambda }_{b}}<{{\lambda }_{g}}\] Þ \[{{f}_{b}}>{{f}_{g}}\]
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