which of the following statements about light is/are correct ?
(1) The speed of light in glass is independent of its frequency.
(2) The wavelength of light will change when it enters an optically denser medium.
(3) The frequency of light will not change when it enters an optically denser medium.
A. (1) only
B. (2) only
C. (1) and (3) only
D. (2) and (3) only
physics
2011-01-31 3:35 am
回答 (2)
2011-01-31 4:29 am
✔ 最佳答案
Statement (1) is wrongThe speed of light in a medium, including glass, is frequency dependent. The higher the frequency, the lower is the speed.
Statement (2) is right.Because the speed of light is lower in a denser medium, this shortens the wavelength.
Statement (3) is right.The frequency of light is independent of its speed.
Therefore, the answer is option D
收錄日期: 2021-04-13 17:47:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110130000051KK00989