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Significant Figures in Sum

Four identica...

Question

Four identical planks each of length 'a' are arranged one above the other over a table as shown. Each projects a distance beyond the edge of the one that is below it. Maximum value for 'L' so that no block topples is

A

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B

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C

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D

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Solution

The correct option is D

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Q. Four identical planks each of length a are arranged one above the other over a table as shown. Each projects a distance beyond the edge of the one that is below it. The maximum value for L so that no block topple is

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