Class 11 Physics: Units & Measurements Mock Test

Unlocked

Progressive Test

Complete this chapter step by step in 8 rounds. If you pass a round, continue to the next fresh question set. If you do not pass, retry the same question set to improve your score.

Quiz: Units and Measurements – Progressive Test
Total questions: 394
Questions in this round: 50
Time allotted: 70 minutes
Pass score: 60%
Total rounds: 8
Current round: 1^st
Rounds passed: 0 / 8
Weakest rounds: None
Rounds attempted: 0

Start Round 1

Locked

Mistake Review

This section collects your incorrect and unanswered Progressive Test questions. Attempt them again and correct them to reduce your pending mistakes.

Complete One Round to Unlock

Locked

Certificate Challenge

Clear your weak questions first, then prove your preparation and earn your chapter certificate.

Quiz: Units and Measurements – Certificate Challenge
Total questions: 394
Questions to attempt: 100 random
Time allotted: 100 minutes
Certificate pass score: 70%
Random questions: Yes
Certificate: Yes
Retake: Until certificate earned
Note: Challenge locks after certificate is earned

Complete Required Practice to Unlock

Progressive Test — Guest First Round

Units and Measurements – Progressive Test

Welcome to the Progressive Test.

Click Start Test to begin the loaded practice round.

Good luck!

1 / 50

1. A distance is covered in time . The maximum percentage error in the speed is

2 / 50

2. A quantity is calculated from . If the percentage error in is and the percentage error in is , the maximum percentage error in is

3 / 50

3. The dimensional formula of area is

4 / 50

4. A record gives rules for maximum percentage error.

Row	Relation	Rule for percentage error
P
Q
R
S

The row that needs repair is

a) S

b) Q

c) R

d) P

5 / 50

5. A sound source vibrates with frequency . Its time period is

6 / 50

6. A quantity is calculated from and . The maximum percentage error in is

7 / 50

7. The unit that naturally represents volume in SI is

8 / 50

8. The record is rewritten using negative powers as

9 / 50

9. The thickness of one very thin sheet is better estimated by measuring a stack because

a) averaging makes the instrument least count zero

b) the unit of thickness changes into time

c) a stack gives a larger measurable thickness

d) one sheet has no physical thickness

10 / 50

10. A screw gauge has pitch and circular scale divisions. A wire gives main scale reading , circular scale reading , and zero error . If the wire length is , the volume of the wire in , using , is closest to

11 / 50

11. A nucleus has a typical radius of about , while an atom has a typical radius of about . The atom is larger by a factor of about

12 / 50

12. A vernier callipers has a positive zero error of . Its zero correction is

13 / 50

13. A passage from a measurement record is given below.

A small current is measured several times with the same ammeter. The readings fluctuate slightly because of tiny changes in contact resistance and pointer position. No constant zero shift is detected.

The most suitable way to report the best estimate is to

a) choose only the first reading

b) remove the unit from the final value

c) add all readings and keep the sum as the current

d) take the mean of the repeated readings

14 / 50

14. A pendulum experiment uses . If and , the maximum percentage error in is closest to

15 / 50

15. The equation is dimensionally valid because

a) numerical constants change dimensions

b) all terms have the dimension of velocity

c) all terms have the dimension of length

d) the term is dimensionless

16 / 50

16. The expression can appear in a physical relation only if

a) and have the same dimensions

b) has dimension and has dimension

c) has dimension

d) is always dimensionless

17 / 50

17. A time interval of is compared with . The second interval is

a) equal to the first

b) times the first

c) times the first

d) times the first

18 / 50

18. In the expression identical coins have total mass , the number is treated as

a) a measured value with one significant figure

b) a unit conversion factor with uncertainty

c) an uncertain value written without a unit

d) an exact counting number

19 / 50

19. A laboratory record shows repeated readings , , , and for the same length under similar conditions. The small unpredictable differences mainly indicate

a) random error

b) a fixed zero error only

c) conversion from length to time

d) absence of uncertainty

20 / 50

20. A metre scale is most suitable for measuring

a) the distance between Earth and a star

b) the diameter of an atom

c) the thickness of a single paper sheet with high precision

d) the length of a classroom table

21 / 50

21. A screw gauge has least count . The main scale reading is , and the circular scale reading is . The observed diameter is

22 / 50

22. A small particle has mass . Using , its mass in is approximately

23 / 50

23. The period and frequency of a regular periodic motion are related by

24 / 50

24. The length and breadth of a rectangle are and . The maximum percentage error in its area is approximately

25 / 50

25. A rectangular block has mass , length , breadth , and height . The maximum percentage error in its density is closest to

26 / 50

26. The unit steradian is associated with the measurement of

a) pressure

b) solid angle

c) luminous intensity

d) length

27 / 50

27. A thermometer is wrongly calibrated so that every temperature reading is higher than the actual temperature. The best way to reduce this error is to

a) repeat the same wrong reading without applying correction

b) calibrate the thermometer or correct the readings

c) change into

d) take only the largest reading

28 / 50

28. A prefix record shows the following entries.

Record	Prefix symbol	Power of ten
P
Q
R
S

The entry that needs correction is

a) S

b) R

c) P

d) Q

29 / 50

29. A parallax angle must be used in radians in the relation because

a) metre can be converted only into radian

b) degree is not a unit of angle

c) baseline has no unit in this method

d) radian measure is a length ratio

30 / 50

30. The mean absolute error has the same unit as

a) the measured quantity

b) the percentage error only

c) the reciprocal of the measured quantity

d) the number of observations

31 / 50

31. A physical quantity is best described as a property that can be

a) measured with value and unit

b) named without any comparison

c) memorised without measurement

d) changed into a unit symbol

32 / 50

32. When two measured quantities are added, the maximum absolute error in the result is found by

a) subtracting their absolute errors

b) multiplying their measured values

c) adding their absolute errors

d) dividing the smaller error by the larger error

33 / 50

33. The radius of a circle is measured with a percentage error of . Since its area is , the percentage error in area is

34 / 50

34. A graph is plotted with on the vertical axis and on the horizontal axis for pendulum data. The slope is measured as . Expressed in , this slope is

35 / 50

35. Absolute error in a single measurement is the magnitude of

a) measured value multiplied by true value

b) unit divided by numerical value

c) measured value minus true value

d) least count added to the unit symbol

36 / 50

36. A work value is . Using , its value in is

37 / 50

37. Error in measurement is best described as the

a) difference between measured value and true value

b) instrument name used in the experiment

c) unit chosen for the measured quantity

d) number of digits written after the decimal point

38 / 50

38. A circular track has radius . A marker moves through an angle of at the centre. The arc length covered is

39 / 50

39. Scientific notation expresses as

40 / 50

40. A density is . Its value in is

41 / 50

41. A formula contains the constant factor , as in . If only is measured, the uncertainty in comes from

a) both and equally

b) neither nor

c) only

d) only

42 / 50

42. A thermometer gives readings , , and for water actually boiling at under the given conditions. The readings are best described as

a) accurate because the readings are repeated

b) precise but inaccurate

c) accurate and imprecise

d) neither precise nor inaccurate

43 / 50

43. A dimensionless quantity is one whose dimensional formula is

44 / 50

44. The rounded form of to three significant figures is

45 / 50

45. In a graph with momentum on the vertical axis and velocity on the horizontal axis, the slope has the dimension of

a) force

b) pressure

c) energy

d) mass

46 / 50

46. A table of reported measurements is shown.

Row	Measurement context	Reported value
P	Length read to nearest
Q	Mass read to nearest
R	Time read to nearest
S	Diameter read to nearest

The row that shows false precision is

a) S

b) P

c) Q

d) R

47 / 50

47. A floor area is reported as . This record shows that

a) the unit measures time

b) the number alone is the complete measurement

c) area and length are the same quantity

d) area is expressed using a square unit

48 / 50

48. For readings , , and , the reported value using mean and mean absolute error is approximately

49 / 50

49. A graph has velocity on the vertical axis and time on the horizontal axis. The dimension of the slope is

50 / 50

50. Atomic clocks are used for highly precise time measurement because they depend on

a) the changing length of a metre scale

b) random changes in room temperature

c) irregular human reaction time

d) highly regular atomic oscillations

Your score is

Complete at least one Progressive Test round with incorrect or unanswered questions to unlock Mistake Review.

Complete at least 25% of the Progressive Test to unlock the Certificate Challenge Section.

Units and Measurements Mock Test – Class 11 Physics

Progressive Test

Mistake Review

Certificate Challenge

Progressive Test — Guest First Round

Units and Measurements – Progressive Test

Share your achievement!

Related MCQs