Question 17
Question 17 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
1. Motion, forces and ene...
1.8. Pressure

State that the pressure at a surface produces a force in a direction at right angles to the surface and describe an experiment to show this

3. Waves
3.4. Sound

Explain why sound waves cannot travel in a vacuum and describe an experiment to demonstrate this