Question

the wave length of particular colour is 6800 A express in metre and nano metre
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Answer 1

Answer:

This can be solved very easily when you know the values of 'A' and 'nm' interms of 'metre'...

If you dont know those values.. Learn now.

1 A⁰ = 10⁻¹⁰ metre

1 nm = 10⁻⁹ metre

From the above values ,

1 A⁰ = 10⁻¹ nm

So,

6800A⁰ = 6800 × 10⁻¹⁰ m

               = 6.8 × 10⁻⁷ m

6800 A⁰ = 6800 × 10⁻¹ nm

              = 680 nm