本题目来源于试卷: Physics Unit27: Early Quantum Theory and Models of the Atom，类别为 Generic Physics
[单选题]
At what rate are photons emitted by a 50-W sodium vaf dmr+0n .4kuipor lampx(.6kc7 0xj rpxeoak9y, j8ax? (Assume that the lamp's light is monochromxe 0(j.rx8pk aokc xx,aj796 yatic and of wavelength $589 \; nm$.)
A. $1.0 \times 10^{20}/$s
B. $1.5 \times 10^{20}/$s
C. $2.0 \times 10^{20}/$s
D. $2.5 \times 10^{20}/$s
参考答案: B
本题详细解析:
暂无
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Post time 2024-1-22 00:41:22