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[Phy] wave mc~

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Hope that the following diagram would help:



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

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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).

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