Measurements Practice Questions
KCSE (Kenya) · KCSE Physics · 143 free MCQs with instant results and detailed explanations.
143
Total
41
Easy
70
Medium
32
Hard
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Sample Questions from Measurements
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
If a ruler measures 30 cm, how many millimeters is this?
A.
300 mm
B.
30 mm
C.
3 mm
D.
0.3 mm
Show Answer & Explanation
Correct Answer: A
To convert centimeters to millimeters, multiply by 10. Therefore, 30 cm equals 30 x 10 = 300 mm.
Q2
Easy
Which of the following tools is best suited for measuring the mass of a small object accurately?
A.
Ruler
B.
Thermometer
C.
Balance Scale
D.
Protractor
Show Answer & Explanation
Correct Answer: C
A balance scale is specifically designed to measure the mass of objects accurately, unlike a ruler or thermometer which serve different functions.
Q3
Easy
What is the SI unit of length?
A.
Meter
B.
Kilogram
C.
Liter
D.
Second
Show Answer & Explanation
Correct Answer: A
The SI unit of length is the meter, which is the standard unit used to measure distance in the International System of Units.
Q4
Medium
A wooden block measures 10 cm x 5 cm x 2 cm. What is its volume in cubic centimeters?
A.
100 cm³
B.
50 cm³
C.
20 cm³
D.
200 cm³
Show Answer & Explanation
Correct Answer: A
The volume of a rectangular block is calculated by multiplying its length, width, and height. Here, Volume = 10 cm * 5 cm * 2 cm = 100 cm³.
Q5
Medium
If the length of a metal rod is measured with a ruler and found to be 150 cm with a possible error of ±0.5 cm, what is the absolute uncertainty in this measurement?
A.
0.5 cm
B.
1.0 cm
C.
0.25 cm
D.
2.0 cm
Show Answer & Explanation
Correct Answer: A
The absolute uncertainty is the value provided ± in the measurement. Here, it is given as ±0.5 cm.
Q6
Medium
A graduated cylinder has a water level at 25.0 mL. If you add 10 mL of oil, what will be the new water level in the cylinder?
A.
35.0 mL
B.
25.0 mL
C.
30.0 mL
D.
10.0 mL
Show Answer & Explanation
Correct Answer: A
When oil is added to water, it will float on top without mixing. Therefore, the new level will be the sum of both liquids, 25.0 mL + 10.0 mL = 35.0 mL.
Q7
Medium
A thermometer reads 30°C. If the temperature increases by 15°C, what will the new reading be?
A.
45°C
B.
30°C
C.
15°C
D.
60°C
Show Answer & Explanation
Correct Answer: A
To find the new temperature, you simply add the increase to the initial reading: 30°C + 15°C = 45°C.
Q8
Hard
A rectangular block of wood measures 10 cm × 5 cm × 2 cm. If the density of the wood is 0.6 g/cm³, what is the mass of the block?
A.
60 g
B.
100 g
C.
30 g
D.
50 g
Show Answer & Explanation
Correct Answer: A
To find the mass of the block, first calculate its volume (length × width × height = 10 cm × 5 cm × 2 cm = 100 cm³). Then use the formula mass = density × volume (mass = 0.6 g/cm³ × 100 cm³ = 60 g). Thus, the correct answer is A.
Q9
Hard
A student measures the length of a table as 2.5 m using a meter stick that has a least count of 0.01 m. What is the maximum possible error in this measurement?
A.
0.01 m
B.
0.02 m
C.
0.005 m
D.
0.1 m
Show Answer & Explanation
Correct Answer: A
The maximum possible error in a measurement is equal to the least count of the measuring instrument. Here, the least count of the meter stick is 0.01 m, making option A the correct answer.
Q10
Hard
A rectangular prism has a length of 10 cm, a width of 5 cm, and a height of 4 cm. What is the volume of the prism in cubic centimeters?
A.
200 cm³
B.
150 cm³
C.
100 cm³
D.
250 cm³
Show Answer & Explanation
Correct Answer: A
The volume V of a rectangular prism is calculated using the formula V = length × width × height. Here, V = 10 cm × 5 cm × 4 cm = 200 cm³.
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Measurements — KCSE (Kenya) KCSE Physics Practice Questions Online
This page contains 143 practice MCQs for the chapter Measurements in KCSE (Kenya) KCSE Physics. The questions are organized by difficulty — 41 easy, 70 medium, 32 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.