The wave length of light having wave number 4000 cm -1 isA- 2-5 - mB- 250 - mC- 25 - mD- 25 nm

The correct option is A 2.5μm v = 1/λ = 1/4000 × 10^4 = 2.5 ...

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The Speed of EM Waves

The wave leng...

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The wave length of light having wave number $4000 c m^{- 1}$ is

2.5μm

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250μm

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25μm

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25nm

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