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NEET Class neet Answered

what is answer of these question
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Asked by jantikaromprakash | 18 Aug, 2022, 12:37: PM
answered-by-expert Expert Answer
There are 50 divisions in Vernier scale . It appears 50 divisions of vernier scale coincides with 49 divisions of main scale divisions.
 
Each main scale division is 1 mm
 
Hence Least Count = [ 1 - (49/50) ] mm = 0.02 mm
 
Reading in figure showns, 8 main scale divisions and 12 vernier scale divisions.
 
measured value = main scale divisions + ( vernier scale divisions × Least Count )
 
Hence measured value = [ 8 + ( 12 × 0.02 ) ] mm = 8.24 mm
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