Class 11 Physics: Units & Measurements Online Test - Exam

Class 11 Physics — Chapter 2: Units and Measurements Online Test

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Class 11 Physics: Units and Measurements Online Test (Paper 1)

Welcome to Paper 1! This is your foundation to build confidence and get you ready to tackle the challenges ahead.

  • Total Questions: 20
  • Time Allotted: 30 minutes
  • Passing Score: 40%
  • Randomization: No
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 20

1. In dimensional analysis, what is the role of dimensional constants?

2 / 20

2. Which field often uses dimensional analysis to verify the validity of new theoretical models or equations?

3 / 20

3. What does error analysis aim to achieve in experimental measurements?

4 / 20

4. Which ancient timekeeping device uses the flow of water from one container to another to measure time intervals?

5 / 20

5. Which property of an object is used to calculate the force due to gravity?

6 / 20

6. Which unit of time is commonly used for measuring short durations, such as intervals between events?

7 / 20

7. Which unit of mass is equivalent to 1000 milligrams?

8 / 20

8. Which instrument measures the mass of an object electronically using a load cell and a digital display?

9 / 20

9. Which unit of mass is equal to one-thousandth of a gram?

10 / 20

10. Which instrument is used to investigate the topography and properties of materials at sub-nanometer scales?

11 / 20

11. Which instrument is used to measure the precise distance changes in an interferometer setup for highly accurate length measurements?

12 / 20

12. Which technique for measuring large distances involves measuring the time delay between the transmission and reception of a signal bounced off a distant object?

13 / 20

13. Which measuring tool is used for measuring distances both horizontally and vertically in surveying?

14 / 20

14. Which measuring tool is ideal for measuring the diameter of a pipe?

15 / 20

15. Which unit of length is smaller: decimeter or kilometer?

16 / 20

16. Which unit of length is used to measure the height of a tall building?

17 / 20

17. Convert 500 square meters to square kilometers.

18 / 20

18. Which unit of length is equal to meters?

19 / 20

19. Convert 5000 grams to kilograms.

20 / 20

20. Convert 2500 millimeters to meters.

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Class 11 Physics: Units and Measurements Online Test (Paper 2)

Welcome to Paper 2! You’ve mastered the basics, and now it’s time to test your understanding with a more challenging set of questions.

Get new questions on each attempt

  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

1. A measurement gives m and m. Compute and its percentage error.

2 / 30

2. Which method involves calculating the standard deviation of repeated measurements to estimate uncertainty?

3 / 30

3. Which method involves using quality control measures to monitor and improve the accuracy of measurements over time?

4 / 30

4. Which instrument is used to investigate the surface topography and properties of materials at atomic resolution?

5 / 30

5. Which technique for measuring large distances is commonly used in astronomy to measure the distances to stars and galaxies?

6 / 30

6. Which method involves taking multiple measurements of the same quantity and calculating the average to reduce random errors?

7 / 30

7. Why are measurements essential in scientific experiments?

8 / 30

8. Which unit of time is commonly used for geological or cosmological events spanning millions or billions of years?

9 / 30

9. What happens to the mass of an object when taken to the Moon from Earth?

10 / 30

10. Which ancient civilization used a decimal system of measurement?

11 / 30

11. Which instrument measures the mass of an object by applying the principle of Hooke's law?

12 / 30

12. Which measuring tool is used to measure very small distances with high precision, such as the thickness of a wire?

13 / 30

13. Which term describes the degree of closeness between a measured value and the true value of a quantity?

14 / 30

14. Which of the following is a base quantity in the International System of Units (SI)?

15 / 30

15. What is dimensional analysis primarily used for in physics and engineering?

16 / 30

16. Which method involves training personnel to minimize errors caused by inconsistent techniques or practices?

17 / 30

17. Which measuring tool is commonly used in tailoring for measuring lengths of fabric?

18 / 30

18. Which instrument uses the vibrations of atoms to measure time with extreme accuracy?

19 / 30

19. Which SI prefix represents ?

20 / 30

20. What is the fundamental difference between weight and mass?

21 / 30

21. Which of the following is a derived quantity in the SI system?

22 / 30

22. What is the result of with correct significant figures?

23 / 30

23. Why is dimensional analysis not suitable for predicting the outcomes of chaotic systems?

24 / 30

24. Convert m² to cm².

25 / 30

25. Which technique for measuring large distances involves bouncing light pulses off a target and measuring the time it takes for the pulses to return?

26 / 30

26. The period–length graph of a pendulum yields s for m. What is and its percentage uncertainty?

27 / 30

27. Which derived quantity is defined as the rate of doing work?

28 / 30

28. Which fundamental quantity is measured in kilograms (kg)?

29 / 30

29. Convert 8000 milliliters to liters.

30 / 30

30. Which measuring tool is commonly used in carpentry for measuring and marking lengths?

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Class 11 Physics: Units and Measurements Online Test (Paper 3)

Welcome to Paper 3! You’ve warmed up—now it's time to step up your game and conquer the challenge with tougher questions!

Earn a certificate upon passing

Get new questions with every attempt

  • Total Questions: 50
  • Time Allotted: 75 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 50

1. Which advantage of the SI system is crucial for ensuring safety in scientific experiments?

2 / 50

2. Which statement accurately describes a limitation of dimensional analysis?

3 / 50

3. What is the principle behind the functioning of a Vernier caliper?

4 / 50

4. What is the importance of significant figures in scientific measurements?

5 / 50

5. What is a derived quantity in the context of measurements?

6 / 50

6. Which instrument uses the vibrations of atoms to measure time with extreme accuracy?

7 / 50

7. What type of error persists consistently in the same direction and affects the accuracy of measurements?

8 / 50

8. Which technique for measuring large distances is commonly used in astronomy to measure the distances to stars and galaxies?

9 / 50

9. Convert Pa to dyn/cm².

10 / 50

10. Which instrument is used to measure distances at the atomic scale by measuring the tunneling current between a sharp tip and the sample surface?

11 / 50

11. Find the number of significant figures in the result of .

12 / 50

12. The density of a metal cylinder is measured: , , . Find and its percentage error.

13 / 50

13. Which of the following is a consequence of using inaccurate measurements in scientific research?

14 / 50

14. In which year did the Metric Act introduce the metric system in the United Kingdom?

15 / 50

15. Which measuring tool is ideal for measuring the diameter of a small cylindrical object?

16 / 50

16. Which unit of time is commonly used for geological or cosmological events spanning millions or billions of years?

17 / 50

17. Which technique for measuring large distances requires precise time measurement to calculate the distance to a reflecting object?

18 / 50

18. A meter scale has a systematic error of +1.0 mm. The true length of a rod if the observed length is 50.00 cm is:

19 / 50

19. Which ancient civilization is credited with developing one of the earliest systems of measurement?

20 / 50

20. What is the dimensional formula for pressure?

21 / 50

21. Which instrument is used to study the detailed structure and composition of materials by scanning a focused beam of electrons over the sample surface?

22 / 50

22. Which instrument measures the mass of an object by comparing it to known masses on two pans?

23 / 50

23. Who introduced the concept of a standardized system of weights and measures in ancient times?

24 / 50

24. Which unit of length is equivalent to 10 decimeters?

25 / 50

25. What is the value of the SI prefix micro-?

26 / 50

26. Which civilization developed a standardized system of coinage that influenced early measurements?

27 / 50

27. Which derived quantity is defined as the rate of doing work?

28 / 50

28. Which approach involves assessing the impact of individual sources of error on the final measurement result?

29 / 50

29. Which SI prefix denotes ?

30 / 50

30. Which non-SI unit is used to measure radiation dose?

31 / 50

31. What is the full form of SI units?

32 / 50

32. Perform the following division with the correct number of significant figures: .

33 / 50

33. Which factor contributes to uncertainty by introducing variations that cannot be controlled or predicted?

34 / 50

34. Which measuring tool is commonly used in engineering workshops for precise measurements of machine parts?

35 / 50

35. Which concept allows scientists to predict the behavior of physical systems without knowing the specifics of every variable involved?

36 / 50

36. Which technique for measuring large distances is used in meteorology for measuring the distance and direction of storm cells?

37 / 50

37. Which instrument is used to observe and measure the surface topography and properties of materials at atomic and molecular levels?

38 / 50

38. Which ancient civilization is credited with the invention of the sundial?

39 / 50

39. What is the dimensional formula for torque?

40 / 50

40. Which instrument is suitable for measuring the mass of objects ranging from small items to large quantities with high accuracy?

41 / 50

41. Which measuring tool is used in scientific laboratories for precise measurements of small objects?

42 / 50

42. Which measuring tool is commonly used to measure the length of a curved object?

43 / 50

43. Which term describes the degree of closeness between a measured value and the true value of a quantity?

44 / 50

44. Which instrument is used to measure surface forces and interactions at the nanoscale by scanning a sharp tip over the sample surface?

45 / 50

45. Which type of uncertainty can be reduced by improving the precision and sensitivity of measuring instruments?

46 / 50

46. What does dimensional analysis rely on to ensure the correctness of physical equations?

47 / 50

47. Which non-SI unit is used to measure frequency?

48 / 50

48. How does the SI system contribute to standardizing quality assurance practices in manufacturing?

49 / 50

49. Which method involves adjusting measuring instruments to a known standard to minimize instrumental errors?

50 / 50

50. What is the value of the SI prefix tera-?

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Practice Units and Measurements MCQs
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Class 11 Physics: Chapter 2 Units & Measurements — Online Test

Class 11 Physics: Units & Measurements Online Test gives you a true exam-style MCQ experience. Solve timed questions, get instant results, review answers, and—on clearing Paper 3—download your certificate. The tests are free, NCERT/CBSE-aligned, and allow unlimited retakes. Use them like a quick chapter-wise mock test / quiz before school exams or competitive exams such as JEE and NEET.

Feeling the pressure of measurement errors, significant figures, or dimensional analysis? You’re not alone. This page is your calm practice space for Units & Measurements. Take short, focused MCQ online tests on your phone or laptop, see what’s working, fix what’s not, and build confidence—step by step. When you’re ready, aim for Paper 3 and earn a certificate.

What’s inside this Units & Measurements Online Test?

Three exam-style MCQ papers for Chapter 2 (Units & Measurements):

  • Paper 1 (Easy) — Foundation: 20 questions · 30 min · Pass 40% · Fixed set
  • Paper 2 (Medium) — Mixed: 30 questions · 45 min · Pass 50% · Randomized from a large pool
  • Paper 3 (Hard) — Challenge: 50 questions · 75 min · Pass 70% · Randomized + Certificate on pass

Note: You’ll see fresh mixes of questions on every attempt in Paper 2 & 3. All papers are timed, auto-evaluated, and show your score with answer review.

Key topics covered (Units & Measurements)

  • International System of Units (SI) — base & derived units, unit conversions
  • Measurement of length, mass, and time — vernier calipers, screw gauge, spherometer
  • Accuracy vs precision — least count, resolution
  • Errors & Uncertainty — systematic & random, absolute/relative/percentage error
  • Error propagation — addition/subtraction/multiplication/division rules
  • Significant figures — rules & rounding
  • Dimensions & dimensional analysis — checking homogeneity, deriving relations
  • Order of magnitude & estimation

How the online test works

Quick flow: Pick a paper → answer MCQs within time → submit → see score + analysis. Pass Paper 3 to download the certificate.

On-screen experience

  • MCQs: One question, four options
  • Timer: P1: 30 min • P2: 45 min • P3: 75 min
  • Navigation: Next/Prev buttons and question map
  • Result page: score %, correct/incorrect/unanswered, time taken, and answer review
  • Retake: Restart any paper anytime (fresh mixes in P2 & P3)

Marking & pass criteria

  • Scoring: +1 for correct, 0 for incorrect (no negative marking)
  • Passing marks: Paper 1 — 40% • Paper 2 — 50% • Paper 3 — 70%
  • Randomization: Paper 2 & 3 pull questions from a larger pool on each attempt; Paper 1 stays fixed

Who should take this test?

  • CBSE/NCERT Class 11 students revising Chapter 2 (Units & Measurements)
  • JEE/NEET foundation aspirants building accuracy & speed in basic measurement concepts
  • Bridge learners revising fundamentals before Class 12
  • Teachers & tutors needing ready-to-use chapter tests
  • International curricula (IGCSE/IB/AP) needing objective practice on universal measurement ideas

Why this online test helps

  • Exam feel: timed papers, pass %, auto-submit
  • Instant feedback: know your strengths/weaknesses immediately
  • Step-up difficulty: Easy → Mixed → Hard (+ certificate)
  • Unlimited attempts: fresh mixes in P2 & P3, practice till confident
  • Free & safe: no payment, no login required

Smart study plan for this chapter

  • Step 1 — Concept check: Attempt Paper 1 after reading the chapter (aim ≥ 40%). Note weak subtopics (e.g., error propagation, sig. figs.).
  • Step 2 — Build accuracy: Attempt Paper 2 (randomized). Focus on recurring mistakes.
  • Step 3 — Exam readiness: Attempt Paper 3 strictly within time (target ≥ 70%).
  • Step 4 — Review & revise: Study the answer review; keep a short error-log for repeated pitfalls.
  • Step 5 — Retention: Re-attempt after 24–48 hours to cement learning.

Important notes before you start

  • Do not refresh or close the tab during the test
  • Best experience: latest Chrome/Edge, stable internet, distraction-free screen
  • Privacy & safety: 100% free—ignore any payment requests

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