Question

Earlier the wavelength of light was expressed in angstroms. One angstrom equals 10–8 cm. Now the wavelength is expressed in nanometers. How many angstroms make one nanometre?

Answer 1

Dear Student,

Both Å and nm are units of length used for very small measurements.

◆ Answer -

10 Å = 1 nm

● Explanation -

As we know,

1 nm = 10^-7 cm

This can be written as -

1 nm = 10 × 10^-8 cm

Substituting 1 Å = 10^-8 cm,

1 nm = 10 × 1 Å

1 nm = 10 Å

Therefore, 10 Angstroms make 1 nanometre.

Hope that makes everything clear...

Answer 2

1angstrom=10-8cm=10-10cm