9th Class Physics Chapter 1 Test1. Physical Quantities and Measurement

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. The repeated to and fro movement between two positions or states of an object.
   1. Oscillation
   2. Rotation
   3. Translation
   4. Geophysics
2. Which type of error is often described as 'bias'?
   1. Random Error
   2. Systematic Error
   3. Measurement Error
   4. Human Error
3. 0.2 mm in units of meters is.
   1. 0.0002 m
   2. 2 × 104 m
   3. Both A & B
   4. None of these
4. Which one of the following is a vector quantity?
   1. Displacement
   2. Speed
   3. Volume
   4. Work
5. If an experiment consistently yields results that are all slightly higher than the true value, what type of error is likely present?
   1. Random Error
   2. Systematic Error
   3. Human Error
   4. Calculation Error
6. Which list contains only scalar quantities?
   1. Acceleration, displacement, velocity
   2. Distance, force, speed
   3. Force, length, time
   4. Length, mass, speed
7. What does precision refer to in measurements?
   1. Closeness to the true value
   2. Consistency of repeated measurements
   3. Measurement range
   4. Measurement average
8. The international system of units is abbreviated as:
   1. IS
   2. SI
   3. Both a & b
   4. None of these
9. Amount of a substance in terms of numbers is measured in.
   1. Gram
   2. Kilogram
   3. Newton
   4. Mole
10. Separation between divisions on the Vernier Scale of the Vernier Calipers is:
    1. 1 cm
    2. 1 mm
    3. 0.9 mm
    4. All