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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Physics
Chapter
Experimental Physics

NTA Abhyas 2020 · Physics · Experimental Physics

Consider the vernier callipers shown below. The instrument has no...

Consider the vernier callipers shown below. The instrument has no zero error. If 1m.s.d=1mm1m . s . d = 1mm and 7m.s.d=8v.s.d7m . s . d = 8v . s . d, then what is the length (in mmmm) of the rod shown in the figure? [Given; the 4thv.s.d{4}^{th}v . s . d coincides with m.s.dm . s . d]

Consider the vernier callipers shown below. The instrument has no zero error. If 1m . s . d = 1mm and 7m . s . d = 8v .

Correct answer

4.5

Step-by-step solution

7m.s.d=8v.s.d7m . s . d = 8v . s . d

⇒1v.s.d=78m.s.d⇒ 1v . s . d = \dfrac{7}{8}m . s . d

⇒L.C=(1−78)mm=18mm⇒ L . C = \left(1 - \dfrac{7}{8}\right)mm = \dfrac{1}{8}mm

Were M.S.R=4mmM . S . R = 4mm

V.S.R=4V . S . R = 4

value=(4+(4)(18))mmvalue = \left(4 + \left(4\right)\left(\dfrac{1}{8}\right)\right)mm

=4.5mm= 4 .5 mm
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