A force is equal to 85.75dyne. If it is expressed in Newton, then the number of significant figures will be
A
6
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B
5
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C
3
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D
4
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Solution
The correct option is D4 We know that, 1dyne=10−5N. So, 85.75dyne=85.75×10−5N Also, we know that change in prefixes of unit does not change the number of significant figures. Thus, the total number of significant figure will be 4.