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Units and Measurements question

2021 · 27 Jul · Shift 1 · Q65
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  5. /2021 · 27 Jul · Shift 1 · Q65

Units and Measurements question

2021 · 27 Jul · Shift 1 · Q65

JEE MainPhysicsUnits and MeasurementsMCQ+4 / −1
Assertion A : If in five complete rotations of the circular scale, the distance travelled on main scale of the screw gauge is 5 mm and there are 50 total divisions on circular scale, then least count is 0.001 cm. Reason R : Least Count = PitchTotal divisions on circular scale{{Pitch} \over {Total\,divisions\,on\,circular\,scale}}TotaldivisionsoncircularscalePitch​ In the light of the above statements, choose the most appropriate answer from the options given below :
  1. A
    A is not correct but R is correct.
  2. B
    Both A and R are correct and R is the correct explanation of A.
  3. C
    A is correct but R is not correct.
  4. D
    Both A and R are correct and R is NOT the correct explanation of A.
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