A Level · AS · multiple choice
AS Level foundations · Question 1
AS Level foundations · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- routine
- Marks
- 1
- Topics
- 1
- Answer
- Complete
multiple choice1 mark
What is the Young modulus expressed in SI base units?
- A
kg m s⁻²
- B
kg m⁻¹ s⁻²
- C
kg m⁻¹ s⁻¹
- D
kg m² s⁻²
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Answer overviewCorrect answer: B — kg m⁻¹ s⁻²
01
1 markAnswer and reasoning
How to approach it
Predict from the governing principle before looking for a matching option. Then reject alternatives by checking direction, units, limiting behaviour or the physical meaning of each statement.
- 1
The correct choice is B: kg m⁻¹ s⁻²
- 2
The Young modulus is a stress, so it has the base units of pressure. A is a force and D is an energy. C is Pa s, the unit of viscosity, and catches candidates who lose one power of time.
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