23. A blackbody at absolute temperature T radiates its peak intensity at wavelength λ. However, another blackbody radiates its peak intensity at wavelength 2λ. What would be the temperature of the second blackbody? (A) 0.5T (B) 0.84T (C) T (D) 2T (E) 16T

1. wo balls enter two frictionless tracks at the same time with the same velocity from the left end. Under the influence of gravity, which ball will arrive at the right end first (A) Ball A. (B) Ball B. (C) Two balls will have the same speed. (D) Uncertain; the answer depends on the height of the slides. (E) Uncertain; the answer depends on the curvature of the right slide.

23. A blackbody at absolute temperature T radiates its peak intensity at wavelength λ. However, another blackbody radiates its peak intensity at wavelength 2λ. What would be the temperature of the second blackbody?
(A) 0.5T
(B) 0.84T
(C) T
(D) 2T
(E) 16T

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