A-Level AQA Physics Use of SI Units & Their Prefixes: Sketch, on the axes in Figure 1,

Sketch, on the axes in Figure 1, the black-body radiation curve for a typical star - AQA - A-Level Physics - Question 2 - 2018 - Paper 4

Question 2

Sketch, on the axes in Figure 1, the black-body radiation curve for a typical star. Figure 1 intensity / arbitrary units 0 0 wavelength

Worked Solution & Example Answer:Sketch, on the axes in Figure 1, the black-body radiation curve for a typical star - AQA - A-Level Physics - Question 2 - 2018 - Paper 4

Step 1

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Answer

To sketch the black-body radiation curve, follow these steps:

Identify Axes: Start by clearly labeling the axes. The x-axis represents the wavelength with longer wavelengths (in nm or µm) growing to the right, while the y-axis depicts the intensity in arbitrary units.
Curve Shape: Draw a smooth curve that starts at the origin, rises to a peak, and then gradually falls back towards the x-axis, characterizing a typical black-body radiation curve. The curve should have a single peak, representing the peak wavelength of the emitted radiation.
Peak Wavelength: The peak of the curve should be representative of the temperature of the star, according to Wien's law. It should be positioned such that it signifies the wavelength at which the star emits the most intense radiation.