A gas is sealed inside a curved glass flask. Which statement about the force produced by the gas pressure on the inside surface of the flask is correct?
The force acts along the surface towards the neck of the flask.
The force acts at right angles to the surface at every point.
The force acts at right angles to the surface only at the base.
The force acts towards the centre of the flask at every point.
40 exam-style questions on AQA GCSE Physics 3.3 Particle model and pressure, covering 3.3.1 Particle motion in gases, 3.3.2 Pressure in gases, and 3.3.3 Increasing the pressure of a gas (HT only). Each one has a worked solution and a mark scheme showing where the marks go.