Find the thickness of the wire. The least count is 0.01 mm. The main scale reads in mm.

 

(A)  7.62 mm

(B)  7.63 mm

(C)  7.64 mm

(D)  7.65 mm

Concept Videos :-

#7 | Vernier Caliper
#8 | Vernier Caliper: Solved Examples 1
#9 | Principle of Vernier Caliper
#10 | Screw Gauge
#11 | Screw Gauge: Solved Examples

Concept Questions :-

Measuring devices

From 1st figure,

Zero error = 0.01 mm X 3 = 0.03 mm

From 2nd figure,

Observed Reading = 7 mm + 0.01mm X67

                             = 7.67 mm

Correct reading = 7.67 mm - 0.03 mm

                          = 7.64 mm 

 

Difficulty Level:

  • 20%
  • 27%
  • 38%
  • 16%