Advanced
PAPER 3: General and Practical Principles in Physics
You must have: Total Marks
Scientific calculator, ruler
Instructions
•• Use black ink or ball-point pen.
If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
• Fill in the boxes at the top of this page with your name,
centre number and candidate number.
•• Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.
Information
•• The total mark for this paper is 120.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• structure
In questions marked with an asterisk (*), marks will be awarded for your ability to
your answer logically, showing how the points that you make are related or
follow on from each other where appropriate.
• The list of data, formulae and relationships is printed at the end of this booklet.
Advice
•• Read each question carefully before you start to answer it.
Try to answer every question.
• Check your answers if you have time at the end.
• You are advised to show your working in calculations including units
where appropriate. Turn over
, Answer ALL questions in the spaces provided.
1 A student used a laser pointer to direct monochromatic light normal to the plane of a
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diffraction grating as shown.
grating x
θ1
laser pointer
D screen
A diffraction pattern was produced on the screen. The distance between the first order
maximum and the central maximum of the diffraction pattern was x. The distance
between the diffraction grating and the screen was D.
(a) The diffraction grating had 300 lines per mm.
The laser pen was marked with λ = 520 nm.
Determine whether the spacing of the diffraction pattern was consistent with
these values.
, (b) The student wrote the following conclusion:
“The value of x was measured with a metre rule. A metre rule has a
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precision of 0.1 cm, so this value was determined with a high degree
of accuracy.”
Comment on this conclusion.
(3)
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