Question

Solve this equation to find the value of 1 / wavelength​

Answer 1

Answer:

$\frac{1}{lemda} = \frac{1}{2}( \frac{1}{120} - \frac{1}{200}) + \frac{1}{200} \\ = > \frac{1}{lemda } = \frac{1}{2}( \frac{5 - 3}{600}) + \frac{1}{200} \\ = > \frac{1}{lemda} = \frac{1}{600} + \frac{3}{600} \\ = > \frac{1}{lemda} = \frac{1}{150}$

Explanation:

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Answer 2

Answer:

just some simple arithmetic