Answer:
The right answer is "5.9". A further solving is provided below.
Step-by-step explanation:
The given values are:
Initial Magnitude,
M₁ = 3.9
Let Second magnitude be M₂.
Now,
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On substituting the values, we get
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On putting the value of "log 120", we get
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On adding "3.9" both sides, we get
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