A force of 2000 N acts on a cross-section of 4.0 × 10⁻⁶ m². The stress is:
From Paper 1: Fundamentals of physics
111 mark
Which material is brittle?
From Paper 1: Fundamentals of physics
121 mark
Metals are ductile because:
From Paper 1: Fundamentals of physics
33(a)4 marks
Sketch and describe the stress–strain graph for a ductile metal, identifying the Young modulus, yield point and ultimate tensile stress, and explain what toughness means.
From Paper 1: Fundamentals of physics
33(b)3 marks
A nylon line of diameter 0.30 mm and length 2.0 m extends by 40 mm under a load of 3.0 N. Calculate the Young modulus.
From Paper 1: Fundamentals of physics
33(c)4 marks
Explain, in terms of microstructure, why metals are tough but ceramics such as glass are brittle, and how glass can be made safer.
Score 0 / 15 · 0 of 7 marked
This paper is written by Plasmo in the style of the OCR A-Level Physics exam. It is not a past paper and is not produced or endorsed by the exam board.