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 micrometer screw gauge is precise to ________ ?

0.005 mm

0.05 mm

0.1 mm

0.01 mm

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

Manometer

Vernier Calipers

Micrometer

Measuring Cylinder

3. 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?

2.91 mm

2.41 mm

2.35 mm

2.85 mm

4. When using a measuring cylinder, one precaution to take is to __________.

look at the meniscus from below the level of the water surface

check for the zero error

obtain more readings by looking from more than one direction

position the eye in line with the base of the meniscus

5. 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?

 

Vernier calipers

Tape measure

Metre rule

Micrometer

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

0.3 mm

-0.3 mm

-0.03 mm

0.03 mm

7. Which of the following is equivalent to the units of force?

$\text{kg m s}^{-2}$

$\text{kg m s}$

$\text{kg m s}^{-1}$

$\text{kg m s}^{2}$

8. Which of the following is a scalar quantity?

the heat needed to boil some water

the effort needed to hammer a nail into wood

the braking force needed to stop a car

the thrust needed to lift a rocket off the ground

9. Which of the following groups of physical quantities consists only of scalars?

force, time, velocity

acceleration, mass, speed

acceleration, force, velocity

mass, speed, time

10. The diagram shows a vernier V placed against a scale S.

What is the vernier reading?

2.23

2.36

2.33

2.26

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