Practice MCQs For Measurement of Physical Quantities

This quiz contains practice questions for Measurement Of Physical Quantities (O Level). There are explanations for some of the questions after you submit the quiz. If you could not figure out why a particular option is the answer, feel free to drop a comment below or ask a question in ‘O’ & ‘A’ Level Discussion section of the forum. If you wish to contribute questions to this quiz, please contact us.

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1. A vernier caliper is precise to __________ ?

2. What would you use to measure the diameter of a beaker in a lab?

3. A workman measures, as accurately as possible, the length and internal diameter of a straight copper pipe.

The length is approximately 600 cm and the internal diameter is approximately 2 cm.

What is the best combination of instruments for the workman to use?

Internal Diameter Length
A Ruler Ruler
B Ruler Tape
C Vernier Calipers Ruler
D Vernier Calipers Tape

4. Which of the following is a scalar quantity?

5. What is the zero error as shown in the figure below?

Caliper reading v3

6. Which device can be used to measure the thickness of a single sheet of paper?

7. Which of the following is a vector quantity?

8. What is the zero error as shown in the figure below?

Micrometer reading v1

9. The diagram shows part of a vernier scale.

vernier qn 2

What is the correct reading?

10. The diagram shows a micrometer scale.

micrometer scale reading 1

What is the reading shown on the micrometer scale?


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38 thoughts on “Practice MCQs For Measurement of Physical Quantities”

    • For measuring on vernier calipers, first read the main scale reading at the edge of the thimble, then read the thimble scale reading opposite the datum line, thimble scale has 50 divisions each division is equal to 0.01 mm, so multiply the thimble scale reading with 0.01 mm. Then add the both readings.


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