Question

calculate frequency and wave number of light having wavelength 400nm​


please solve this question as Soo n as you can tommorow is my exam please help me​

Answer 1

Answer:

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Explanation:

Wave length = 400 mm

Wave number = 1/wavelength

= 1/400×10 to power -9

Wave number = 2.5 × 10 to power 6

Frequency = c/wavelength

= 3×10 to power 8/400×10 to power -9

Frequency = 7.5 × 10 to power 14