Question

1. Frequency of wave with a wave length of 450nm is...............
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Answer 1

Answer:

6.6 × 10^14 m

Explanation: AS

                     λ ν=C

SO, ν = C÷λ

  ν = 3 ×10^8÷450×10^-9

  ν = 6.6 × 10^14