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A boy measures the length of a piece of ...

A boy measures the length of a piece of pencil by metre rule, vernier callipers and screw gauge to be 1.2 cm, 1.24 cm and 1.243 cm respectively. State the least count of each measuring instrument

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To determine the least count of each measuring instrument used by the boy to measure the length of a piece of pencil, we will analyze each instrument one by one. ### Step 1: Identify the first measuring instrument - Meter Rule - The boy measures the length of the pencil using a meter rule and gets a reading of 1.2 cm. - The least count of a meter rule is generally 0.1 cm (or 1 mm), which is the smallest division on the scale. ### Step 2: Identify the second measuring instrument - Vernier Calipers - The boy then measures the length of the pencil using vernier calipers and gets a reading of 1.24 cm. ...
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