[Class 6] Tasneem wants to make a metre scale by herself. She consider - Questions at the end of chapter (Page 97, 98 & 99)

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Question 12 (Page 99) Tasneem wants to make a metre scale by herself. She considers the following materials for it—plywood, paper, cloth, stretchable rubber and steel. Which of these should she not use and why?Material Should She Use It ? Reason Plywood Yes Hard and rigid, does not bend or stretch easily. Paper No (Not ideal) O Can tear or get wrinkled; length can change if it absorbs moisture. Cloth No Flexible and stretches, gives wrong readings. Stretchable rubber No Changes length when stretched - not reliable for measuring. Steel Yes Strong, durable, and accurate - commonly used in real metre scales.

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CA Maninder Singh is a Chartered Accountant for the past 15 years and a teacher from the past 19 years. He teaches Science, Economics, Accounting and English at Teachoo