In an experiment, the percentage of error occurred in the measurement of physical quantities A, B, C and D are 1%, 2%, 3% and 4% respectively. Then the maximum percentage of error in the measurement X, where X = , will be :

  1. %
  2. 16%
  3. −10%
  4. 10%

Answer (Detailed Solution Below)

Option 2 : 16%
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CT 1: Botany (Cell:The Unit of Life)
25 Qs. 100 Marks 20 Mins

Detailed Solution

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CONCEPT:

To get the maximum percentage error in the given physical quantities we have to differentiate the given equation in terms of the error that occurred in the measurement. In a more general way, it can be written as;

The maximum percentage error is

Here, X, A, B, C, and D are the measurement of physical quantities.

CALCULATION:

Given: ----(1)

Now, differentiate the equation (1) we have;

Now,maximum percentage error is,

 

                  

                  = 2% + 1% + 1% + 12%

                  = 16%

Hence, option 2) is the correct answer.

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