台電雇員物理103年26.29題 - 考試
By Olive
at 2015-09-16T00:04
at 2015-09-16T00:04
Table of Contents
26.水中有聲源,在水中產生頻率F、波長A並傳播至空氣。
則在空氣中變化為?
我選F不變A變大。 答案為F不變A變小。
請問為何呢?
29.凸透鏡其凸面取率半徑10CM,則焦距為多少?
這題完全不知道。只知道球面鏡的。
請問有公式或推導嗎?
謝謝各位!!
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