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CAIE A-Level Physics AS 1.2 Si Units Questions

Practise base quantities, derived-unit algebra, dimensional homogeneity and prefix conversions.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Covered syllabus points

1.2.1—The following SI base quantities and their units: mass (kg), length (m)1.2.2—Derived units as products or quotients of the SI base units and use the1.2.3—SI base units to check the homogeneity of physical equations1.2.4—The following prefixes and their symbols to indicate decimal submultiples or

Question 1

[Maximum number: 1]

Which unit is an SI base unit?

A

ampere

B

coulomb

C

degree Celsius

D

gram

Question 2

[Maximum number: 1]

What is a unit of power?

A

JC−1\mathrm{JC}^{-1}

B

Jm−1\mathrm{Jm}^{-1}

C

JN−1\mathrm{JN}^{-1}

D

Js−1\mathrm{J} \mathrm{s}^{-1}

Question 3

[Maximum number: 2]

The density ρ\rho of the rock from which the pebble in (b) is composed is given by

ρ=MrnkL\rho=\frac{M r^{n}}{k L}

where n is an integer and k is a constant, with no units, that is equal to 2.094 .

Use SI base units to show that n is equal to -2 .

Question 4

[Maximum number: 2]

A unit may be stated with a prefix that represents a power-of-ten multiple or submultiple.
Complete Table 1.1 to show the name and symbol of each prefix and the corresponding power-of-ten multiple or submultiple.

Table 1.1

Table 1.1

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