CAIE A-Level Physics AS 1 Physical Quantities and Units Questions
Practise handling SI units, dimensions, estimates, uncertainties and scalar-vector distinctions in physical calculations.
- Syllabus
- 2028–2030
- Course
- Physics 9702
- Level
- AS
Covered syllabus points
Question 1
[Maximum number: 1]
What must be included in a record of a physical quantity?
A
an integer value for the quantity
B
an SI unit
C
a numerical value for the quantity
D
a unit expressed in base units
C
Question 2
[Maximum number: 1]
Which unit is an SI base unit?
A
ampere
B
coulomb
C
degree Celsius
D
gram
A
Question 3
[Maximum number: 1]
The measurement of a physical quantity may be subject to random errors and to systematic errors.
Which statement is correct?
A
A systematic error cannot be reduced by adjusting the apparatus.
B
A systematic error results in a different reading each time the measurement is taken.
C
Random errors are always caused by the person taking the measurement.
D
Random errors can be reduced by taking the average of several measurements.
D
Question 4
[Maximum number: 1]
Two physical quantities combined together as a product can produce a scalar quantity or a vector quantity.
Which product of two quantities produces a scalar quantity?
A
(force) × (displacement of an object in the direction of the force)
B
(mass) × (acceleration of the mass)
C
(pressure) × (area on which the pressure acts)
D
(velocity) × (time for which an object has that velocity)
A
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