A wooden plank is to be varnished

PHYSICS · Subjective · CBSE · Physics · Units and Measurements · Units and Measurements

Problem

A wooden plank is to be varnished. Its length and breadth are measured as length L=1.234 m±0.005 m\text{length } L = 1.234\,\text{m} \pm 0.005\,\text{m}, breadth B=0.104 m±0.002 m\text{breadth } B = 0.104\,\text{m} \pm 0.002\,\text{m}. (i) Calculate the area of the plank. (ii) Estimate the absolute uncertainty in the area. (iii) Express the area together with its absolute uncertainty using the correct number of significant figures. (iv) Determine the percentage uncertainty in the area.

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