本區搜索:
Yahoo!字典
打印

[Phy] wave mc~

[隱藏]
我諗應該係咁
所謂的焦點無限法, 大概是指當物件向左移時, 影像也會向左移, 反之亦然
假設光線現在穿過焦點 C, 再穿過鏡片, 最後理論上光線應穿過焦點C`
現在將光源(物件)向左移, 光線穿過焦點 C 的左邊, 再穿過鏡片, 最後光線也應穿過焦點C` 的左邊

[ 本帖最後由 ngkin 於 2010-4-11 12:18 PM 編輯 ]

TOP

(3)...
樓主有補ken chan唔明點用佢方法..?

TOP

Hope that the following diagram would help:



[ 本帖最後由 kiwakwok 於 2010-4-11 12:24 PM 編輯 ]
附件: 您所在的用戶組無法下載或查看附件

TOP

引用:
原帖由 kiwakwok 於 2010-4-11 12:14 PM 發表
Hope that the following diagram would help:

26162


Personally, the answer B is the closest possible answer.
答案的確是c 吧?
在2F後的object 被CONVEX LENS REFRACT 後 , IMAGE WILL BE FORMED BETWEEN F AND 2F.?


還有想問問
為什麼紅線會pass through C' ? 唔係應該 原本條light ray come from C先至會咁?

[ 本帖最後由 suki_lsk719 於 2010-4-11 12:24 PM 編輯 ]

TOP

回覆 #20 suki_lsk719 的帖子

I think the choice (2) and (3), the main point is not the accuracy of the geometry, but the main point is where the ray locate. In fact, the ray should located in between F and C (That's (3) in the question.)

However, (3) in the the question is badly drawn.
For the best answer, it should be (3).

By the way, is it a CE question?

TOP

回覆 #19 suki_lsk719 的帖子

It is due to the thickness of the line, it should be in between F and C (in principle).

TOP

引用:
原帖由 kiwakwok 於 2010-4-11 12:24 PM 發表
I think the choice (2) and (3), the main point is not the accuracy of the geometry, but the main point is where the ray locate. In fact, the ray should located in between F and C (That's (3) in t ...
o
可能個scale 唔太岩

我諗應該係從PP 改出黎
因為呢份應該係補習社的MOCK / EXERCISE

TOP

i believe is C

TOP

回覆 #18 kiwakwok 的帖子

我就咁做囉~~
可能個圖真係唔係幾岩= =...

我冇補KEN CHAN= = 所以唔識....
E題係唔係會考我都唔知

TOP

重要聲明:小卒資訊論壇 是一個公開的學術交流及分享平台。 論壇內所有檔案及內容 都只可作學術交流之用,絕不能用商業用途。 所有會員均須對自己所發表的言論而引起的法律責任負責(包括上傳檔案或連結), 本壇並不擔保該等資料之準確性及可靠性,且概不會就因有關資料之任何不確或遺漏而引致之任何損失或 損害承擔任何責任(不論是否與侵權行為、訂立契約或其他方面有關 ) 。