How many photons of electromagnetic radiation of frequency 4.56 MHz are needed to have a total energy of 5.4J?
回答 (1)
2018-03-16 12:45 pm
Planck constant, h = 6.626 × 10⁻³⁴ J s
Frequency, ν = 4.56 MHz = 4.56 × 10⁶ /s
Energy per photon = hν = (6.626 × 10⁻³⁴) × (4.56 × 10⁶) J
No. of photons = 5.4 / [(6.626 × 10⁻³⁴) × (4.56 × 10⁶)] = 1.79 × 10²⁷
Frequency, ν = 4.56 MHz = 4.56 × 10⁶ /s
Energy per photon = hν = (6.626 × 10⁻³⁴) × (4.56 × 10⁶) J
No. of photons = 5.4 / [(6.626 × 10⁻³⁴) × (4.56 × 10⁶)] = 1.79 × 10²⁷
收錄日期: 2021-05-01 14:08:47
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20180316034206AAxR1A8