Question

The wavelength of light is 5000 angstrom. Express it in nm and m.

Answer 1

1 angstrom = 0.1nm

5000 angstrom = 5000/1 × 0.1nm

= 500nm

`1 \: angstrom = 1 * {10}^( - 10) m`

5000 angstrom = 5000 × 1 × 10^-10

= 5 × 10^-7 m

Hope this helps you