the wave length of light is 689mm.what is its wave length in Angstrom
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Explanation:
589 / 0.1 = 5890Angstroms. Answer : 5890 Angstroms
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1mm = 10000000 Å
then 689 mm = 689 × 10^ 7
= 6. 89 × 10^9 Å
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