Welcome Guest Search | Active Topics |

Tag as favorite
AAMC Flashcard Question
Options
Previous Topic Next Topic
Justine_5420
#1 Posted : Monday, July 27, 2020 2:28:16 PM
Rank: Member

Groups: Registered
Joined: 5/13/2020
Posts: 14

Thanks: 0 times
Was thanked: 0 time(s) in 0 post(s)
Hello,

One of the flashcard question from the physics AAMC questions states:

"Suppose a certain far-sighted person can see objects clearly no closer than 300 cm away. What is the minimum distance from a plane mirror such a person must be to see his reflection clearly?"

We never really discussed plane mirrors - could someone please explain to me why this distance would be halfed?
Back to top
Report?
INSTR_Faisal_57
#2 Posted : Monday, July 27, 2020 3:40:18 PM
Rank: Newbie

Groups:
Joined: 6/7/2020
Posts: 0

Thanks: 0 times
Was thanked: 0 time(s) in 0 post(s)
Hi Justine,

If you stand 1 meter, for example, in front of a plane mirror, the image that you see in the mirror looks like it's 1 meter behind the mirror, for a total of 2 meters.

So if someone has the ability to see clearly at 300 cm, then if they were in front of a plane mirror they would have to stand 150 cm infront of the mirror to see their image clearly, as their image would appear to be 300 cm away.
Back to top
Report?
Users browsing this topic
Guest (2)
Tag as favorite
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Clean Slate theme by Jaben Cargman (Tiny Gecko)
Powered by YAF | YAF © 2003-2009, Yet Another Forum.NET
This page was generated in 0.073 seconds.