The frequency of the light having wave number 3⨉ 10⁶ m⁻¹ s
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Explanation:
wave number = 1 / wave length
=》 wave length = 1 / 3 × 10⁶
BY APPLYING FORMULA =》 v = f × λ
=》 f = v / λ
=》 f = 3 × 10⁸ × 3 × 10⁶ [ as λ = 1 / 3 × 10⁶ so while multiplying it will be reciprocalled]
=》 f = 9 × 10¹⁴ heartz
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