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. In an experiment, it is required to measure the distance between two points which are between 0.7 m to 0.8 m apart. Which of the following instruments should be used so that the distance can be measured to within an accuracy of 0.001 m?

A ten-metre measuring tape

A metre rule

A metre rule and a pair of vernier calipers

A half-metre rule

2. Which of the following comprises of one vector and one scalar quantity?

Speed, Displacement

Magnetic Field, Velocity

Force, Acceleration

Distance, Mass

3. Which group of quantities consists of all vectors?

1. Mass, force, weight
2. Weight, acceleration, work done
3. Weight, displacement, force

1 and 2 only

1, 2 and 3

1 only

3 only

4. The dimensions of a small book is measured as 32.2 mm, 54.2 mm, 13.7 mm. What measuring tool could have been used to obtain these readings?

Vernier Caliper

Meter Rule

Measuring Tape

Micrometer Screw Gauge

5. In a micrometer screw gauge, the ratchet is used to

correct the zero error

turn the circular scale

lock the spindle

apply the correct pressure

6. The figure below shows the final reading on a vernier caliper with a zero error of -0.3 mm. What is the actual measurement?

10.32 cm

9.72 cm

10.05 cm

9.99 cm

7. Which of the following is a scalar quantity?

the effort needed to hammer a nail into wood

the thrust needed to lift a rocket off the ground

the braking force needed to stop a car

the heat needed to boil some water

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

obtain more readings by looking from more than one direction

position the eye in line with the base of the meniscus

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

check for the zero error

9. Which of the following is precise, but not accurate?

B

D

C

A

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

acceleration, force, velocity

acceleration, mass, speed

force, time, velocity

mass, speed, time

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