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[" 4.In an experiment the angles are req...

[" 4.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 half-a-degree "(=0.5^(@))],[" then the least count of the instrument is "],[" a) One minute "],[" c) One degree "," b) Half minute "],[" d) Half degree "]

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In a experiment the angle are required to be measured using an instrument. 26 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale . If the smallest division of the main scale is half -a-degree (=0.5^(@)) then the least count of the instrument is .

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