1ST_QUARTER_MARCIANO_GEN.PHYSICS1
  • 1. Which SI unit is used for temperature?
A) Celsius
B) Fahrenheit
C) Joule
D) Kelvin
  • 2. 1 kilometer is equal to how many meters?
A) 10,000
B) 10
C) 100
D) 1,000
  • 3. Convert 250 cm to meters.
A) 0.25 m
B) 2.5 m
C) 25 m
D) 250 m
  • 4. Which of the following is NOT a unit of length?
A) inch
B) centimeter
C) kilogram
D) meter
  • 5. How many seconds are there in 2 hours?
A) 12,000
B) 60,000
C) 3,600
D) 7,200
  • 6. Convert 0.005 kg to grams.
A) 50 g
B) 500 g
C) 5 g
D) 0.5 g
  • 7. Which statement is true?
A) Precision measures closeness to true value; accuracy measures repeatability
B) Accuracy and precision are the same
C) Accuracy measures closeness to true value; precision measures repeatability
D) None of the above
  • 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) Low accuracy, low precision
B) High accuracy, low precision
C) High accuracy, high precision
D) High precision, low accuracy
  • 10. Which scenario represents low precision but high accuracy?
A) Very close to each other but off the true value
B) Randomly scattered around the true value
C) All measurements identical to the true value
D) Scattered far from the true value
  • 11. Systematic errors are caused by:
A) Random guessing
B) Human estimation errors only
C) Faulty instruments or calibration errors
D) Environmental changes
  • 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) A measure of accuracy
B) Maximum error possible
C) Least count of an instrument
D) Square root of variance
  • 14. Speed is a
A) Both
B) Scalar
C) None
D) Vector
  • 15. Displacement is a
A) Both
B) Scalar
C) None
D) Vector
  • 16. Mass is a
A) None
B) Vector
C) Both
D) Scalar
  • 17. Velocity has:
A) Magnitude and direction
B) None
C) Magnitude only
D) Direction only
  • 18. A quantity with only magnitude and no direction is called _______.
A) Force
B) Acceleration
C) Scalar
D) Vector
  • 19. Acceleration is a:
A) Scalar
B) Both
C) None
D) Vector
  • 20. Distance vs displacement: distance is ____ while displacement is ____
A) Vector, scalar
B) Scalar, scalar
C) Scalar, vector
D) Vector, vector
  • 21. Which method can be used for vector addition?
A) Parallelogram method
B) All of the above
C) Graphical method
D) Component method
  • 22. Adding 2 vectors using tip-to-tail method results in:
A) Triangle
B) Parallelogram
C) Circle
D) None
  • 23. How many grams are in 3.5 kg?
A) 3,500 g
B) 30,500 g
C) 35,000 g
D) 350 g
  • 24. Random errors can be minimized by:
A) Using faulty tools
B) Taking repeated measurements and averaging
C) Calibrating instruments
D) Ignoring fluctuations
  • 25. Measurements: 12.1, 12.0, 12.2, 12.1. They are:
A) Precise but not accurate
B) Accurate but not precise
C) Neither
D) Accurate and precise
  • 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) 5.2 cm
B) 5.0 cm
C) 5.1 cm
D) 5.3 cm
  • 27. A 10 N force acting east is a
A) Neither
B) Both
C) Scalar
D) Vector
  • 28. Distance travelled in 5 seconds at 2 m/s is:
A) None
B) Both
C) Vector
D) Scalar
  • 29. 13.
    Which of the following is a correct conversion?
A) 1cm = 10m
B) 1m = 100mm
C) 1L = 1000mL
D) 1kg = 100g
  • 30. 8.
    Which pair are both derived quantities?
A) Speed and Mass
B) Area and Volume
C) Length and Mass
D) Time and Temperature
  • 31. Repeating a measurement several times reduces:
A) True value
B) Systematic error
C) Random error
D) Least count
  • 32. Human estimation mistakes, such as misreading a scale, are classified as:
A) Random errors
B) Instrumental errors
C) Systematic errors
D) Environmental errors
  • 33. Which factor affects precision the most?
A) Instrument quality and calibration
B) Repeated measurements
C) Environmental fluctuations
D) All of the above
  • 34. To reduce errors caused by environmental factors, one should:
A) Take measurements in controlled conditions
B) Ignore fluctuations
C) Only use analog instruments
D) Measure only once
  • 35. Which of the following instruments likely has the smallest least count?
A) Ruler
B) Measuring tape
C) Meterstick
D) Micrometer screw gauge
  • 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) Repeat the measurement several times and take the average
B) Use a ruler instead
C) Ignore small variations
D) Measure only once carefully
  • 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) Only measure once with each ruler
C) Estimate errors without measurement
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) 100 N
C) 75 N
D) 0 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 = 10.1 cm, approximate range = 0.3 cm
B) Mean length = 9.9 cm, approximate range = 0.4 cm
C) Mean length = 10.0 cm, approximate range = 0.4 cm
D) Mean length = 10.0 cm, approximate range = 0.2 cm
  • 40. Five measurements: 51.0, 49.0, 50.0, 50.5, 49.5 cm. This data shows
A) High precision, low accuracy
B) Low precision, high accuracy
C) Low precision, low accuracy
D) High 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) Low precision, high accuracy
B) High precision, low accuracy
C) High accuracy, high precision
D) Low accuracy, low precision
  • 42. Accuracy refers to:
A) How close measurements are to each other
B) The instrument’s least count
C) How close a measurement is to the true value
D) The range of measurements
  • 43. Precision refers to:
A) How close measurements are to each other
B) The range of measurements
C) How close a measurement is to the true value
D) Instrument calibration
  • 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) Accurate but not precise
B) Neither accurate nor precise
C) Both accurate and precise
D) Precise but not accurate
  • 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) Neither precise nor accurate
B) Accurate but not precise
C) Precise but not accurate
D) Both accurate and precise
  • 46. A boat sails 6 km north and then 8 km east. Resultant displacement is
A) 12 km, 60° north of east
B) 14 km, 45° north of east
C) 10 km, 36.87° north of east
D) 10 km, 53.13° north of east
  • 47. A car moves 20 km east and then 15 km east. Its total displacement is
A) 35 km east
B) 5 km east
C) 15 km east
D) 20 km east
  • 48. A runner moves 30 m north, then 10 m south. The net displacement is:
A) 20 m north
B) 40 m north
C) 30 m north
D) 10 m south
  • 49. A ship moves 50 km east, then 30 km west. Its displacement is:
    a)
    b)
    c)
    d)
A) 80 km east
B) 80 km west
C) 20 km west
D) 20 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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