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Chapter 1 – Measurements and Experimentation | Exercise 1B

Question 17

A boy uses vernier callipers to measure the thickness of his pencil. He measures it to be 1.4mm. If the zero error of vernier callipers is +0.02cm, what is the correct thickness of pencil?

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Given: Thickness of the pencil = 1.4mm

Zero error = +0.02cm

Actual thickness =?

Correct reading = observed reading – zero error

= 1.4mm – 0.02cm

= 1.4mm – 0.2mm

= 1.2mm

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subject-cta

Question 17

A boy uses vernier callipers to measure the thickness of his pencil. He measures it to be 1.4mm. If the zero error of vernier callipers is +0.02cm, what is the correct thickness of pencil?

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

Given: Thickness of the pencil = 1.4mm

Zero error = +0.02cm

Actual thickness =?

Correct reading = observed reading – zero error

= 1.4mm – 0.02cm

= 1.4mm – 0.2mm

= 1.2mm

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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