本题目来源于试卷: Particulate Nature of Matter B.2 Greenhouse Effect，类别为 IB物理学
[单选题]
The following three statements give possible read6 fk8mxz* dyv1.ps7b sons why the averagegw8i1*)gd os4t qvn 9t intensity of sunlight incident on a solar panel during a day on earth is only 1q9o*4t dng8wvsig t) a fraction of the solar constant.
I. Scattering of sunlight in the atmosphere
II. Rotation of the earth
III. The surface of the solar panel is not perpendicular to incident of sunlight
Which of the statements are correct?
A. $I$ only
B. $I$ and $III$
C. $II$ and $III$
D. $I$, $II$, and $III$
参考答案: D
本题详细解析:
Explanation: Statement I is correct. The scattering of sunlight returns part of the sunlight back to space, reducing intensity on the ground. Statement II is correct. The rotation of earth causes day and night, reducing the time the solar panel is exposed to sunlight and also changing the incident angle of sunlight on the panel. Statement III is correct. The intensity on the solar panel is maximum when its surface is perpendicular to incident sunlight, but due to the seasons, the time of day and the installation angle of the panel the sunlight will not be normally incident on the panel. Thus, D is the answer.
| 
