A-Level Physics: AQA Year 1 & 2 Exam Practice Workbook - includes Answers: superb for the 2024 and 2025 exams (CGP AQA A-Level Physics)

£5.995
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A-Level Physics: AQA Year 1 & 2 Exam Practice Workbook - includes Answers: superb for the 2024 and 2025 exams (CGP AQA A-Level Physics)

A-Level Physics: AQA Year 1 & 2 Exam Practice Workbook - includes Answers: superb for the 2024 and 2025 exams (CGP AQA A-Level Physics)

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The light from the two slits is still coherent, even though it is now white and contains a mixture of wavelengths. Think about what happens in destructive and constructive interference when waves have different amplitude. A single beam of red light from a laser shines on the double slit and a pattern of red dots is seen on the screen.

The internal energy of a material can be increased in two ways: by heating it and by doing work on it.Explore the wonders of the underwater world and develop theoretical and practical marine science skills. c Explain why the thermistor would be more useful for measuring temperatures close to 0 °C than to 100 °C. b Explain why there are no ‘lost volts’ across the internal resistance of the battery when the reading is 6. e Suggest why having lines as far apart as this for a diffraction grating experiment is not suitable. a As represented in the diagram of a solid, each atom is in contact with a number of neighbouring atoms.

c State the amount of energy per kilogram that would be required to move the spacecraft entirely out of the Earth’s gravitational field.

v State and explain how the signal-to-noise ratio changes as the length of the coaxial cable increases. To do this: Starting at source Q, count three circles outwards from Q and four circles outwards from P. Superposition and interference This exercise helps you to think about interference and path difference. d Show the resultant displacement if the original and the wave in part c pass through the same point. a length = 40 m; cross-sectional area = 10−8 m2 b length = 20 m; cross-sectional area = 2 × 10−8 m2 c length = 100 m; cross-sectional area = 5 × 10 −8 m2 5 Calculate the resistivity of a length of wire which has a resistance of 60 Ω, cross-sectional area of 2.

a Draw a free body diagram to show the forces acting on the ball when it is moving upwards at point A. Gravitational potential energy and kinetic energy You can calculate the GPE and the KE of an object using these equations: Ep = mgh Ek = 21 mv2 In this exercise you will look at the derivations of these equations. You can think of it as the gravitational potential energy per unit mass, but remember that its value is zero at infinity and less than zero everywhere else.We publish textbooks, revision guides, workbooks and more for pupils aged 11–19+ who are studying for GCSEs, A-levels and many other qualifications. In practice, several measurements of load and extension would be made and a graph drawn of stress against strain.

is anticlockwise (the ‘direction’ of E2) so, for a resistor where the current is clockwise, the ‘IR’ term will be negative. At the start of the experiment, one mass is pulled forwards and released so that it swings back and forth. a Draw a free body diagram to represent these forces acting on a fish as it moves horizontally through water. It shows the four forces acting on the block as it is pulled, by a length of string, directly up the slope at a constant speed of 0. d In the diagram, the arrow on point A shows the direction in which the string at A is about to move.

a Show that this leads to the equation for the gravitational field strength at a distance r from a point mass M: g = GM2 . b Sketch the (I–V) characteristic of a semiconductor diode in both forward bias (positive values of V) and negative bias (negative values of V). Complete the table to show the total power output of the heater when the switches are closed as shown. b State which particles in the carbon atom are hadrons and how many hadrons in total are found in one neutral atom of carbon.



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