ame Btanyhoipa 19a Pre-Lab Assignment (Due at the beginning of Lab) Read over th

Question

ame Btanyhoipa 19a Pre-Lab Assignment (Due at the beginning of Lab) Read over the lab then answer the following questions. Show all work The diameter of a rod was measured as accurately as possible using the following instruments: metric ruler, vernier calipers and a micrometer. The table below shows the readings obtained. Complete the table and show which instrument produced each reading. Explain. 1. Diameter Diameter (mm) Instrument used cm 1.91 1.912 2. The diagrams below show readings of a vernier caliper, Figure (1.a) shows the zero error reading, Figure (1.b) the reading when the vernier caliper is being used to measure the diameter of a ball. What is the actual diameter of the ball? (include the units in parenthesis) Figure 1.b Figure l.a Answer Zero Reading Reading of main scale Reading of vernier scale Total reading of the vernier caliper Actual diameter of the ball

Explanation / Answer

Q1.

Ans- (a) Diameter=1.9cm = 19mm  

Instrument used , is meter ruler , Since meter ruler has least count of 1mm.

(b)

Diameter=1.91cm = 19.1mm  

  Instrument used , is vernier caliper , Since vernier caliper has least count of 0.1mm.

(c)

Diameter=1.912cm = 19.12mm  

  Instrument used , is micrometer , Since micrometer has least count of 0.01mm.

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