Question

How is the answer in nanometer?
Explain the calculation

Answer 1

Answer:

why not dear???

Explanation:

$\frac{3.0 \times {10}^{8}m {s}^{ - 1} }{6.91 \times {10}^{14}hz } = 0.434 \times {10}^{8 - 14} m {s}^{ - 1} s \\ = 0.434 \times {10}^{ - 6} m \\ = \frac{434}{1000} \times {10}^{ - 6} m \\ = 434 \times {10}^{ - 6 - 3} m \\ = 434 \times {10}^{ - 9} m = 434nm$