1ST_QUARTER_MARCIANO_GEN.PHYSICS1
  • 1. Which SI unit is used for temperature?
A) Fahrenheit
B) Joule
C) Celsius
D) Kelvin
  • 2. 1 kilometer is equal to how many meters?
A) 10
B) 100
C) 10,000
D) 1,000
  • 3. Convert 250 cm to meters.
A) 0.25 m
B) 25 m
C) 2.5 m
D) 250 m
  • 4. Which of the following is NOT a unit of length?
A) centimeter
B) inch
C) meter
D) kilogram
  • 5. How many seconds are there in 2 hours?
A) 3,600
B) 60,000
C) 7,200
D) 12,000
  • 6. Convert 0.005 kg to grams.
A) 500 g
B) 0.5 g
C) 50 g
D) 5 g
  • 7. Which statement is true?
A) Accuracy measures closeness to true value; precision measures repeatability
B) Precision measures closeness to true value; accuracy measures repeatability
C) None of the above
D) Accuracy and precision are the same
  • 8. If a measurement is very precise but not accurate, it means:
A) Values are neither consistent nor close
B) Values are close to the true value
C) Values are consistent but far from the true value
D) Values are random
  • 9. A dartboard is used to illustrate accuracy and precision. All darts are clustered together but far from the bullseye. This shows:
A) High accuracy, low precision
B) Low accuracy, low precision
C) High precision, low accuracy
D) High accuracy, high precision
  • 10. Which scenario represents low precision but high accuracy?
A) Randomly scattered around the true value
B) All measurements identical to the true value
C) Scattered far from the true value
D) Very close to each other but off the true value
  • 11. Systematic errors are caused by:
A) Environmental changes
B) Human estimation errors only
C) Random guessing
D) Faulty instruments or calibration errors
  • 12. A set of repeated measurements: 10, 12, 11, 13, 12. The mean is:
A) 12
B) 11
C) 11.5
D) 12.5
  • 13. Standard deviation is:
A) Least count of an instrument
B) Maximum error possible
C) A measure of accuracy
D) Square root of variance
  • 14. Speed is a
A) Scalar
B) Vector
C) Both
D) None
  • 15. Displacement is a
A) Scalar
B) Vector
C) None
D) Both
  • 16. Mass is a
A) Vector
B) Both
C) None
D) Scalar
  • 17. Velocity has:
A) None
B) Magnitude only
C) Magnitude and direction
D) Direction only
  • 18. A quantity with only magnitude and no direction is called _______.
A) Vector
B) Scalar
C) Force
D) Acceleration
  • 19. Acceleration is a:
A) None
B) Vector
C) Both
D) Scalar
  • 20. Distance vs displacement: distance is ____ while displacement is ____
A) Vector, vector
B) Scalar, scalar
C) Scalar, vector
D) Vector, scalar
  • 21. Which method can be used for vector addition?
A) Graphical method
B) Parallelogram method
C) All of the above
D) Component method
  • 22. Adding 2 vectors using tip-to-tail method results in:
A) Parallelogram
B) Circle
C) Triangle
D) None
  • 23. How many grams are in 3.5 kg?
A) 30,500 g
B) 35,000 g
C) 350 g
D) 3,500 g
  • 24. Random errors can be minimized by:
A) Calibrating instruments
B) Using faulty tools
C) Taking repeated measurements and averaging
D) Ignoring fluctuations
  • 25. Measurements: 12.1, 12.0, 12.2, 12.1. They are:
A) Accurate and precise
B) Accurate but not precise
C) Neither
D) Precise but not accurate
  • 26. Five measurements: 5.2, 5.0, 5.1, 5.3, 5.2 cm. The mean is:
    a) 5.0 cm
    b) 5.2 cm
    c) 5.1 cm
    d) 5.3 cm
A) 5.3 cm
B) 5.0 cm
C) 5.2 cm
D) 5.1 cm
  • 27. A 10 N force acting east is a
A) Vector
B) Scalar
C) Both
D) Neither
  • 28. Distance travelled in 5 seconds at 2 m/s is:
A) Both
B) Scalar
C) None
D) Vector
  • 29. 13.
    Which of the following is a correct conversion?
A) 1kg = 100g
B) 1cm = 10m
C) 1L = 1000mL
D) 1m = 100mm
  • 30. 8.
    Which pair are both derived quantities?
A) Time and Temperature
B) Length and Mass
C) Speed and Mass
D) Area and Volume
  • 31. Repeating a measurement several times reduces:
A) Random error
B) True value
C) Systematic error
D) Least count
  • 32. Human estimation mistakes, such as misreading a scale, are classified as:
A) Instrumental errors
B) Environmental errors
C) Random errors
D) Systematic errors
  • 33. Which factor affects precision the most?
A) All of the above
B) Instrument quality and calibration
C) Environmental fluctuations
D) Repeated measurements
  • 34. To reduce errors caused by environmental factors, one should:
A) Only use analog instruments
B) Measure only once
C) Ignore fluctuations
D) Take measurements in controlled conditions
  • 35. Which of the following instruments likely has the smallest least count?
A) Measuring tape
B) Ruler
C) Micrometer screw gauge
D) Meterstick
  • 36. A student uses a spring scale with a least count of 0.1 N to measure a force. Suggest a method to minimize random errors in their experiment.
    a)
    b)
    c)
    d)
A) Use a ruler instead
B) Ignore small variations
C) Measure only once carefully
D) Repeat the measurement several times and take the average
  • 37. Design an experiment to compare accuracy and precision of two different rulers. Which step is essential?
A) Use rulers of different lengths without measuring
B) Estimate errors without measurement
C) Only measure once with each ruler
D) Measure a known length multiple times with each ruler
  • 38. Two forces, F₁ = 50 N at 0° and F₂ = 50 N at 120°, act on a body. Predict the approximate magnitude of the resultant.
A) 50 N
B) 0 N
C) 75 N
D) 100 N
  • 39. A student measures a 10 cm rod five times: 9.9, 10.1, 10.0, 9.8, 10.2 cm. Determine:
A) Mean length = 10.0 cm, approximate range = 0.2 cm
B) Mean length = 9.9 cm, approximate range = 0.4 cm
C) Mean length = 10.1 cm, approximate range = 0.3 cm
D) Mean length = 10.0 cm, approximate range = 0.4 cm
  • 40. Five measurements: 51.0, 49.0, 50.0, 50.5, 49.5 cm. This data shows
A) High precision, high accuracy
B) Low precision, low accuracy
C) High precision, low accuracy
D) Low precision, high accuracy
  • 41. Measurements of a liquid’s volume: 100.5, 99.8, 100.2, 100.0, 100.3 mL. True volume = 100 mL. Identify accuracy and precision
A) High accuracy, high precision
B) Low accuracy, low precision
C) High precision, low accuracy
D) Low precision, high accuracy
  • 42. Accuracy refers to:
A) How close a measurement is to the true value
B) The instrument’s least count
C) How close measurements are to each other
D) The range of measurements
  • 43. Precision refers to:
A) How close measurements are to each other
B) How close a measurement is to the true value
C) Instrument calibration
D) The range of measurements
  • 44. A thermometer has a real temperature of 37.0 degree Celsius, but gives readings: 39.2 degree Celsius, 39.3 degree Celsius, 39.1 degree Celsius. What is the best description of the instrument?
A) Neither accurate nor precise
B) Both accurate and precise
C) Precise but not accurate
D) Accurate but not precise
  • 45. 16.
    A class measures the length of a stick known to be 100.0 cm. their results are: 87.5 cm, 87.6 cm, and 87.4 cm. what do these values indicate?
A) Both accurate and precise
B) Neither precise nor accurate
C) Precise but not accurate
D) Accurate but not precise
  • 46. A boat sails 6 km north and then 8 km east. Resultant displacement is
A) 10 km, 53.13° north of east
B) 10 km, 36.87° north of east
C) 12 km, 60° north of east
D) 14 km, 45° north of east
  • 47. A car moves 20 km east and then 15 km east. Its total displacement is
A) 5 km east
B) 15 km east
C) 35 km east
D) 20 km east
  • 48. A runner moves 30 m north, then 10 m south. The net displacement is:
A) 10 m south
B) 20 m north
C) 40 m north
D) 30 m north
  • 49. A ship moves 50 km east, then 30 km west. Its displacement is:
    a)
    b)
    c)
    d)
A) 80 km west
B) 20 km west
C) 20 km east
D) 80 km east
  • 50. A boat moves 5 km west and 12 km north. Resultant displacement:
    a)
    b)
    c)
    d)
A) 15 km, 60° north of west
B) 14 km, 45° north of west
C) 12 km, 53° north of west
D) 13 km, 67.4° north of west
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