Understanding Vernier Calipers

What is a vernier caliper used for?

• To measure temperature accurately.

• To calculate the area of a surface.

• For weighing small objects.

• A vernier caliper is used for precise measurement of length, depth, and internal and external dimensions.

How do you read the main scale of a vernier caliper?

• Read the main scale just before the zero of the vernier scale.

• Read the main scale after the zero of the vernier scale.

• Read the main scale at the midpoint of the vernier scale.

• Ignore the main scale and only use the vernier scale.

What is the least count of a typical vernier caliper?

• 0.1 mm

• 0.02 mm

• 0.5 mm

• 1 mm

If the main scale reads 5 cm and the vernier scale reads 0.3 cm, what is the total measurement?

• 6.0 cm

• 5.3 cm

• 5.5 cm

• 5.0 cm

Explain how to measure the internal diameter of a pipe using a vernier caliper.

• Measure the external diameter of the pipe instead.

• To measure the internal diameter of a pipe using a vernier caliper, insert the pipe into the caliper, close the jaws until they touch the inner walls, and read the measurement.

• Use a ruler to measure the diameter directly.

• Insert a tape measure inside the pipe to get the diameter.

What is the formula to calculate the total reading of a vernier caliper?

• Total Reading = MSR * VSR

• Total Reading = VSR + 2*MSR

• Total Reading = MSR + VSR

• Total Reading = MSR - VSR

If the least count of a vernier caliper is 0.02 cm, how many divisions are there on the main scale?

• 100

• 25

• 75

• 50

How do you determine the zero error of a vernier caliper?

• The zero error is determined by checking the alignment of the zero marks when the jaws are closed.

• The zero error is found by measuring a known length with the caliper.

• The zero error is calculated by subtracting the reading from the actual measurement.

• The zero error is determined by checking the scale against a ruler.

What is the significance of the zero error in measurements?

• Zero error can improve the accuracy of measurements.

• Zero error is irrelevant in scientific experiments.

• Zero error only affects visual measurements.

• Zero error can lead to systematic inaccuracies in measurements, affecting data reliability.

If a vernier caliper shows a reading of 7.5 cm with a zero error of -0.1 cm, what is the corrected measurement?

• 7.5 cm

• 7.6 cm

• 7.4 cm

• 8.0 cm