If I₀ = 10^-12 W/m², and I = 4

question 42

Multiple Choice

If I₀ = 10^-12 W/m², and I = 4.5 x 10^-8 W/m², what is log (I/I₀) ?

• A)4.5 x 10⁴
• B)18
• C)11
• D)4.7
• E)3.7

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