Physics

The wavelength of light of a particular colour is 5800 $$\mathring{A}$$. What is its order of magnitude in meter?


SOLUTION
1 Angstrom, or $$1\mathring { A } $$ is $$1\times { 10 }^{ -10 }$$meter.
So, $$5800\mathring { A } $$ = $$5.8\times{ 10 }^{ 3 }\times { 10 }^{ -10 }$$meter = $$5.8\times { 10 }^{ -7 }$$meter.
Hence its magnitude in meter is $${ 10 }^{ -7 }m$$
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