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The cut-off wavelength for a certain material is 3.310 × 10^-7 m. What is the cut-off frequency for the material?

Answers

Speed of light ‘c’ = 3.0 × 10⁸ m/s.
Since f = c / ${\lambda}$,
then f = 3.0 × 10⁸ / 3.310 × 10^-7 = 9.06 × 10¹⁴ Hz

Mutiso answered the question on October 17, 2018 at 05:36

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