Question

How many wave lengths of $K{r}^{86}$ are there in 1 metre?

• A. 1553164.13
• B. 1650763.73
• C. 2948123.73
• D. 652169.13

Answer 1

The correct option is B 1650763.73

$\begin{array}{c}\lambda =6058\dot{A},(\lambda =\text{wavelength.)}\\ \lambda =6058\times {10}^{-10}m\\ \text{Number of wavelenths in 1m}=\frac{1}{\lambda }=\frac{1}{6058\times {10}^{-10}}=1650763.73m.\end{array}$