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If a ruler has a least count of 0.1 cm, what is the smallest measurement it can

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Question: If a ruler has a least count of 0.1 cm, what is the smallest measurement it can accurately provide? (2023)

Options:

  1. 0.1 cm
  2. 0.05 cm
  3. 0.01 cm
  4. 1 cm

Correct Answer: 0.1 cm

Exam Year: 2023

Solution: 

The least count of a measuring instrument is the smallest value that can be measured accurately, which in this case is 0.1 cm.

If a ruler has a least count of 0.1 cm, what is the smallest measurement it can

Practice Questions

Q1
If a ruler has a least count of 0.1 cm, what is the smallest measurement it can accurately provide? (2023)
  1. 0.1 cm
  2. 0.05 cm
  3. 0.01 cm
  4. 1 cm

Questions & Step-by-Step Solutions

If a ruler has a least count of 0.1 cm, what is the smallest measurement it can accurately provide? (2023)
  • Step 1: Understand what 'least count' means. It is the smallest value that can be measured accurately by a measuring tool.
  • Step 2: Look at the least count given in the question, which is 0.1 cm.
  • Step 3: Realize that since the least count is 0.1 cm, this is the smallest measurement the ruler can provide accurately.
  • Least Count – The least count of a measuring instrument is the smallest value that can be measured accurately.
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