簡單物理MC!

2008-05-18 11:33 pm

1. which of the following MUST be a property of a virtual image?
A. it is laterally inverted.
B. it is of the same size as the object.
C. It cannot be picked up on a screen.
D. It is as far behind the mirror as the object is in front.

回答 (2)

2008-05-19 10:08 pm
✔ 最佳答案
C is the correct answer.
Why? Please see the following explanation.

A (it is laterally inverted) is not correct because although the virtual image
formed from the plane mirror is laterally inverted, the virtual image formed
by a concave lens is not.

B (it is of the same size as the object) is also not correct because although the virtual image formed from the plane mirror is the same size as the object , the virtual image formed by a concave lens may not.

D (it is as far behind the mirror as the object is in front) is not correct because the image distance is equal to the object distance in mirror reflection.

As a result, the answer is C.
參考: me
2008-05-19 1:01 am
A virtual image is not formed by ACTUAL intersection of light rays, hence cannot be picked up on a screen.

Thus, option C is the answer.


收錄日期: 2021-04-29 17:23:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080518000051KK01759

檢視 Wayback Machine 備份