7 (a) Describe in steps how would you measure the length of a pencil using a metre ruler. Draw a diagram if necessary. (b) Explain with an example how you will use the metre ruler in part (a) if the ends of the ruler are broken??
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To measure the length of a pencil using a metre rule, place metre rule with its marking close to the object. Let PQ be a pencil. The end P of the pencil coincides with the zero marks on the ruler. The end Q of the pencil is read by keeping the eye at the position 'B' vertically above the end Q.
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