Question

The wavelength of light of a particular colour is 5800 Å.
Express it in metre.

Answer 1

As we know, 1 m = 10¹⁰ Å

Given, Wavelength of light = 5800 Å

Substituting the value of wavelength in the relation above, we get,

10¹⁰ Å = 1 m

1 Å = 10^-10 m

∴ 5800 Å = 5800 × 10^-10 m

∴ 5800 Å = 5.8 × 10^-7 m

Hence, wavelength of 5800 Å in m = 5.8 × 10 ^-7m.