What precaution should be taken when reading water in a measuring cylinder?

Place the eye in line with the bottom of the meniscus

Read the cylinder from any angle

Class 9 Physics · Chapter 1 · Test 6

Final Board Test

19 MCQs • Assess your understanding of the complete chapter, including SI units, measuring instruments, scientific notation, significant figures, errors, and textbook exercise concepts.

MCQs

19 questions · 20 min · 19 marks

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Sample questions

The first 5 of 19. Try each one, then tap to see the answer.

Question 1
Which instrument is most suitable for measuring the thickness of a few sheets of cardboard?
- AMetre rule
- BMeasuring tape
- CMeasuring cylinder
- DMicrometer screw gauge
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Answer: D
The textbook identifies the micrometer screw gauge as suitable for measuring the thickness of a few sheets of cardboard.
Question 2
One femtometre is equal to which value in metres?
- A10^-9 m
- B10^-12 m
- C10^-15 m
- D10^15 m
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Answer: C
The textbook exercise states that one femtometre equals 10^-15 m.
Question 3
What does a light-year measure?
- ATime
- BDistance
- CSpeed
- DLight intensity
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Answer: B
A light-year is a unit of distance.
Question 4
Which of the following is a non-physical quantity according to the textbook exercise?
- AMass
- BTime
- CColour
- DLength
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Answer: C
The textbook exercise identifies colour as a non-physical quantity.
Question 5
What precaution should be taken when reading water in a measuring cylinder?
- AView the meniscus from above
- BView the meniscus from below
- CPlace the eye in line with the bottom of the meniscus
- DRead the cylinder from any angle
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Answer: C
The eye should be in line with the bottom of the concave water meniscus.

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