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Find the value of b if 

  1. 2
  2. 3
  3. 4
  4. 5

Answer (Detailed Solution Below)

Option 2 : 3
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Detailed Solution

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Concept:

Calculation:

Given: 

Using the formula, 

     -----(1)

∵ It is given that, -     ----(2)

On comparing (1) and (2) we get b = 3.

Hence, the correct answer is option 2.

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