ï»¿ In an experiment, the angles are required to be measured using an instrument. 29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale. If the smallest division of the main scale is halfâ€“aâ€“degree (= 0.5oÂ° ), then the least count of the instrument is from Physics Units and Measurement Class 11 Manipur Board

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In an experiment, the angles are required to be measured using an instrument. 29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale. If the smallest division of the main scale is halfâ€“aâ€“degree (= 0.5oÂ° ), then the least count of the instrument is

• one minute

• half minute

• One degree

• half degree

A.

one minute

1VSD = 29/30 MSD
L.C. = 1 MSD â€“ 1 VSD
= 1/30 MSD

1VSD = 29/30 MSD
L.C. = 1 MSD â€“ 1 VSD
= 1/30 MSD

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The quantity used as a standard of measurement is called unit.

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Give four examples of physical quantities.

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Define physical quantity.

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