The figure shows how the intensity of the radiation emitted by an object varies with wavelength, for the same object at $∘C500\ ^\circ\text{C}$ and at $∘C1000\ ^\circ\text{C}$ .

Figure: Intensity of the radiation emitted by one object plotted against wavelength, at $∘C500\ ^\circ\text{C}$ and at $∘C1000\ ^\circ\text{C}$

Use the figure to determine the wavelength at which the object at $∘C1000\ ^\circ\text{C}$ emits its most intense radiation.

Describe two ways in which the radiation emitted by the object changes when its temperature is increased from $∘C500\ ^\circ\text{C}$ to $∘C1000\ ^\circ\text{C}$ .

A steel bar glows dull red, and then glows bright yellow-white, as it is heated to higher and higher temperatures. Explain why.

The figure shows how the intensity of the radiation emitted by an object varies with wavelength, for the same object at $∘C500\ ^\circ\text{C}$ and at $∘C1000\ ^\circ\text{C}$ .

Figure: Intensity of the radiation emitted by one object plotted against wavelength, at $∘C500\ ^\circ\text{C}$ and at $∘C1000\ ^\circ\text{C}$

Use the figure to determine the wavelength at which the object at $∘C1000\ ^\circ\text{C}$ emits its most intense radiation.

Describe two ways in which the radiation emitted by the object changes when its temperature is increased from $∘C500\ ^\circ\text{C}$ to $∘C1000\ ^\circ\text{C}$ .

A steel bar glows dull red, and then glows bright yellow-white, as it is heated to higher and higher temperatures. Explain why.

6.3 Black body radiation

Question 7

Markscheme

6.3 Black body radiation

Question 7

Markscheme

6.3 Black body radiation

Question 7

6.3 Black body radiation Questions

6.3 Black body radiation

Question 7

6.3 Black body radiation Questions