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Least Count

What is the l...

Question

What is the least count of a stopwatch if there are 50 divisions between 0 and 5 s mark?

A

1 s

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B

10 s

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C

0.1 s

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D

0.01 s

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Solution

The correct option is C
0.1 s

Least count = Value of one smallest division on its scale = $\frac{5 s e c o n d s}{50 d i v i s i o n s}$ = 0.1 s.

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