A cooling brown dwarf has an initial surface temperature of 1600∘C1600^\circ\text{C}1600∘C, and its blackbody radiation spectrum peaks at a wavelength of λ\lambdaλ. Over time, the brown dwarf cools to a surface temperature of 850∘C850^\circ\text{C}850∘C.
What is the wavelength at which the peak intensity of the blackbody radiation is emitted at this lower temperature, in terms of λ\lambdaλ?
0.53λ0.53\lambda0.53λ
0.60λ0.60\lambda0.60λ
1.67λ1.67\lambda1.67λ
1.88λ1.88\lambda1.88λ
66 exam-style questions on OCR A A Level Physics Astrophysics and cosmology, covering Stars, Electromagnetic radiation from stars, and Cosmology. Each one has a worked solution and a mark scheme showing where the marks go.