# Practice MCQs For Measurement of Physical Quantities

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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.

The quiz comprises of 10 questions, which are randomly selected from a large pool of questions. After completion, you can refresh the page and try the quiz again for a new set of 10 questions.

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1. A micrometer screw gauge with a -0.03 mm zero error is used to get the final reading as shown in the figure below. What is the actual reading?

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

3. Which instrument is used to measure the internal diameter of a pipe with a single measurement?

4. Which of the following is accurate but not precise?

5. The width of a wooden block is measured using vernier calipers.

What is the width of the block?

6. Which of the following correctly lists one scalar and one vector quantity?

Scalar Quantity Vector Quantity
A Displacement Work
B Energy Force
C Force Acceleration
D Velocity Mass

7. Which of the following is a vector quantity?

8. What is the reading as shown in the figure below?

9. The diagram shows part of a vernier scale.

What is the reading on the vernier scale?

10. In an experiment, a ball is rolled down a curved track that is about half a metre long.

Which measuring device should be used to measure the length accurately?

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

1. The answer is 0.01 or 0.1 but mostly I agree with 0.01

2. What if we say that EMF: This is the process on which the cell manage to convert chemical and mechanical energy into electrical energy.

• EMF is the work done to drive a unit charge acorss the whole circuit

what you described is potential difference

• Ya l agree with u though l know less

3. Great! Great!

4. What is electromotive force

• A difference in potential that tends to give rise to an electric current.
🙂

• Potential difference is usually across a load while EMF is provided by the battery.

• EMF: It is the electrical energy provided to a unit of charge in order to drive it round a complete circuit.

5. Hi there. What’s the answer to Q#7. Thank you.

• 3.5mm the 4th option

• The answer is 0.01 or 0.1 but mostly I agree with 0.01

6. Can’t understand question 9 and 8

• The questions are randomized. Which questions did you get for 8 and 9?

• What is the zero error as shown below? Ans: -0.7 mm
Which of the following is a scalar quantity?
1:the heat needed to boil some water
2:the effort needed to hammer a nail into wood
3:the braking force needed to stop a car
4:the thrust needed to lift a rocket off the ground

• If a vernier caliper has a minus/negative error, you have to count from the end of the vernier scale. In this case, counting from the end of the vernier scale, the points on the vernier scale and main scale line up at 0.7 mm (0.3 mm if counted from the front). Hence, the vernier caliper has a zero error of -0.7mm. Hope this helps. 🙂

• Thanks Jesvi…that did help 🙂

• Question 9. See the diagram for a micrometer screw Gaugae or use a real one in order to close on an object use a thimble but in order to get an accurate answere by avoiding squeezing of the object a ratchet is used.

• for question 8.
the question asked for quantities consisting of vector.
vector has 6 quantities,which are: force, acceleration, momentum, velocity, weight, displacement
i usually memorize them by “famvwd” which is^^^^^^^^^^^^^^^^^^^^^^^^^^^
Hope it helps.=)

7. i got an A* in physics thanks for helping

8. The first and last questions are the same but they have different answers?