PHYA2 6 Mark Question Answers Revision Style

Answers for the 6 mark prose questions in revision style bullet points.

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AQA AS Physics A
PHYA2 ­ Mechanics, Materials and Waves
6 Mark Question Answers
January 2010
Describe how to obtain, accurately by experiment, the data to determine the Young's Modulus of a
Metal Wire. A space is provided for a labelled diagram. The quality of your written answer will be
assessed in this question. [6 Marks]
Quantities to be measured
Measure original length
Measure extension
Measure diameter
Extension = Extended Length ­ Original Length
Measuring Instruments
Measure original length and extension with tape measure
Measure diameter with micrometer
Accuracy
Varying Load / Mass
Repeat Readings (of length of extension)
Diameter measured in several places
Change in diameter monitored (with micrometer)
Original length of wire 1.0m
Additional Points
2
How cross-sectional area is found using (D
2)
June 2010

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AQA AS Physics A
PHYA2 ­ Mechanics, Materials and Waves
6 Mark Question Answers
On her next jump the gymnast decides to reach a height above position B. Describe and explain, in
terms of energy and work, the transformations that occur as she ascends from her lowest position A
until she reaches her new position above B. The quality of your written communication will be
assessed in this question. [6 Marks]
Elastic Potential energy is changed into kinetic or trampoline does work on the gymnast.…read more

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AQA AS Physics A
PHYA2 ­ Mechanics, Materials and Waves
6 Mark Question Answers
Figure 4 shows a stationary wave on a string. The string is tied onto a thin metal bar at A and fixed at
B. A vibration generator causes the bar to oscillate at a chosen frequency.
Explain how a stationary wave is formed. Then describe the key features of the stationary wave
shown in Figure 4. The quality of your written answer will be assessed in this question.…read more

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AQA AS Physics A
PHYA2 ­ Mechanics, Materials and Waves
6 Mark Question Answers
A Scientist is going to use a double slit arrangement to carry out measurements in order to
determine the wavelength of light from a laser.
The Scientist has a double slit of a known separation. Describe the measurements that need to be
taken and explain how they are used to find the wavelength of light. Discuss any necessary safety
precautions and how would arrange the apparatus to improve accuracy.…read more

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AQA AS Physics A
PHYA2 ­ Mechanics, Materials and Waves
6 Mark Question Answers
Correct use of n = dsin
And measure appropriate angle (e.g. `to first order beam' is the minimum required)
And method to measure angle (e.g. tan = D X , spectrometer, protractor)
1
For full marks: also explain how d is calculated e.g. d = lines per mm (103)
Accuracy/Reliability
Measure between more than one order (e.g.…read more

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AQA AS Physics A
PHYA2 ­ Mechanics, Materials and Waves
6 Mark Question Answers
measurements. A space is provided for a labelled diagram should you wish to include one. The quality
of your written communication will be assessed in this question.…read more

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AQA AS Physics A
PHYA2 ­ Mechanics, Materials and Waves
6 Mark Question Answers
An explanation of how nodes and antinodes form.
The quality of written communication will be assessed in your answer.…read more

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AQA AS Physics A
PHYA2 ­ Mechanics, Materials and Waves
6 Mark Question Answers
Figure 4 shows the velocity ­ time graph for steel ball A
Explain the shape of the graph in Figure 4. Your account should include:
How the velocity and acceleration of the steel ball vary with time
Reference to how Newton's First and Second laws of motion apply in this situation.
The quality of written communication will be assessed in your answer.…read more

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