Question

The wavelength of violet light is 4000 Å. Express it in (i) nanometre and (ii) in metre.​

Answer 1

Explanation:

The wavelength of violet light is 4000 Å.

1Å = 10^-10 m

1nm = 10^-9m

so, 1Å = 10^-1 nm

So, 4000Å = 400nm

4000Å = 4000× 10^-10 m

4000Å= 4 × 10^-7

Answer 2

Answer:

nanometre 4×10^-19 nm & meter 4×10^-7 meter