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JEE Main Physics question

PhysicsUnits and MeasurementJEE Main

A student has measured the length of a wire equal to . This value of length has the number of significant figures equal to [J & K CET 2009]

Answer: (B)

Solution

In , the leading zeros are not significant, but the zero between 4 and 5, and the trailing zero, are

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Question ID VK-157011