Question

The wave length of light of a particular colour is 4200A°. Express it in metre. *​

Answer 1

Explanation:

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Answer 2

Given - Wavelength in angstrom -

4200 A°

Find - Wavelength in metres.

Solution - To convert angstorm into metre, following relation will be used -

1A° = 10^-10 metre.

Hence, 1A° = 10^-10 metre

So, 4200A° will be - 10^-10*4200

Therefore, 4200A° will be 4.2*10^-7 metre.

Angstorm is the unit commonly used to measure wavelength. Wavelength is defined as the distance between two consecutive crests or troughs.