Question 1

A student measures the length of a block using a ruler as shown in the first image. The left edge of the block is at $$L_1 = 2.4$$\ \mathrm{cm}$$ and the right edge is at L_2$ = 5.3\ \mathrm{cm}. $$What is the correct length of the block?

Accepted Answer

$$2.9\ \mathrm{cm}$$

Question 2

Which instrument would be most appropriate to measure the time taken for a 100-meter sprint?

Accepted Answer

Digital stopwatch

Question 3

A vernier caliper gives a main scale reading of $$2.60\ \mathrm{cm}$$ and the 7th vernier division coincides with the main scale. If each vernier division is $$0.01\ \mathrm{cm}$$, what is the total reading?

Accepted Answer

$$2.67\ \mathrm{cm}$$

Question 4

Which of the following is the SI unit for mass?

Accepted Answer

kilogram ($$kg)$$

Question 5

A measuring cylinder contains $$50\ \mathrm{cm}^3 of $$water. After a stone is gently lowered into it, the water level rises to $$65\ \mathrm{cm}^3. $$What is the volume of the stone?

Accepted Answer

$$15\ \mathrm{cm}^3$$

Question 6

Which of the following errors can be prevented by ensuring the observer's eye is perpendicular to the scale when taking a reading?

Accepted Answer

Parallax error

Question 7

A digital thermometer reads $$37.0\ ^\circ\mathrm{C}. $$What is this temperature in Kelvin?

Accepted Answer

$$310.2\ \mathrm{K}$$

Question 8

Which apparatus would you use to measure the diameter of a small metal rod most accurately?

Accepted Answer

Vernier calipers

Question 9

A measuring cylinder is placed on an inclined surface while measuring the volume of a liquid. Which type of error is most likely to occur?

Accepted Answer

Systematic error due to improper setup

Question 10

If a ruler has a damaged end (dead space), what is the best way to measure the length of an object accurately?

Accepted Answer

Start measuring from another known division and subtract the initial reading from the final reading

Question 11

Which of the following conversions is correct?

Accepted Answer

$$1\ \mathrm{L} = 1000\ \mathrm{ml}$$

Question 12

A student uses a displacement can and a measuring cylinder to find the volume of an irregular stone. The volume of water collected in the measuring cylinder is $$38\ \mathrm{cm}^3. $$What is the volume of the stone?

Accepted Answer

$$38\ \mathrm{cm}^3$$

Question 13

Which of the following is a precaution to take when measuring the volume of a liquid in a measuring cylinder?

Accepted Answer

Ensure the cylinder is on a flat surface and the liquid is still

Question 14

A student records a time interval as $$2\ \mathrm{min}$$ and $$30\ \mathrm{s}. $$What is this time in seconds?

Accepted Answer

$$150\ \mathrm{s}$$

Question 15

Which of the following is NOT an SI unit?

Accepted Answer

Centimetre ($$cm)$$

Question 16

A student reads the temperature on a thermometer as shown in the image with divisions labeled X, Y, and Z. If X = $$51\ ^\circ\mathrm{C}$$, Y = $$55\ ^\circ\mathrm{C}$$, and Z = $$58\ ^\circ\mathrm{C}$$, what is the temperature difference between Z and X?

Accepted Answer

$$7\ ^\circ\mathrm{C}$$

Question 17

Which instrument would you use to measure the mass of a chemical sample most accurately?

Accepted Answer

Top pan electronic balance

Question 18

A student wants to measure the volume of a large irregular stone. Which method should they use?

Accepted Answer

Use the displacement method with a displacement can and measuring cylinder

Question 19

Which of the following best describes zero error?

Accepted Answer

An error caused by not starting measurement from the zero mark or a known division

Question 20

A digital vernier caliper displays a reading of $$10.0\ \mathrm{mm}. $$What is this value in centimeters?

Accepted Answer

$$1.0\ \mathrm{cm}$$

Physics Study Notes: Measurement of Physical Quantities

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