兩道SAT2物理練習題.

　　下面是兩道SAT2物理練習題的內容，都是關于光的反射的，用的是一副圖，答案的選項也是一樣的。這樣的SAT2物理題目可以讓大家更加有針對性的掌握一個知識點。下面我們一起來看看這兩道SAT2物理練習題的內容吧。

　　The set of lettered choices below rers to multiple questions. Select the one lettered choice that best answers each question. A choice may be used once, more than once, or not at all in each set.

　　1、A beam of light is incident on a rectangular opening in the front of a box, as shown in the side view above. The back of the box is open. After passing through the box, the light is incident on a screen. The following devices may be in the box, positioned as shown.

　　Which device could produce a tiny spot of light on the screen?

　　Answer Choices

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　The correct answer is A

　　Explanation

　　Difficulty: Medium

　　The correct answer is a convex lens. To produce a tiny spot of light, the optical device must cause the rays to converge and create a real image on the screen. Of the devices shown, only a convex lens can accomplish this.

　　2、A beam of light is incident on a rectangular opening in the front of a box, as shown in the side view above. The back of the box is open. After passing through the box, the light is incident on a screen. The following devices may be in the box, positioned as shown.

　　Which device could produce a diffraction pattern consisting of a central bright fringe with parallel secondary fringes that decrease in intensity with increasing distance from the center of the screen?

　　Answer Choices

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　The correct answer is D

　　Explanation

　　Difficulty: Medium

　　The correct answer is the opaque card with the slit. It provides an obstruction that would yield the single-slit diffraction pattern described

　　以上就是這兩道SAT2物理練習題的全部內容，來自SAT官方網站，后面附有簡要的答案解析。大家在備考SAT2物理考試的時候，可以適當?shù)膮⒖己途毩曇幌律厦娴倪@兩道題目。最后祝大家考試順利。

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