A question that has been puzzling me for ages Watch

Oddball
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Hi folks,

Have often wondered (no comments about me being a loser please ) about this.

If you were to stand 5 metres from a mirror and look at your reflection - how far are you looking? 5 metres? Or 10 metres?

*Strokes chin*
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The_Goose
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10
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TeamBlueGravy
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(Original post by Oddball)
Hi folks,

Have often wondered (no comments about me being a loser please ) about this.

If you were to stand 5 metres from a mirror and look at your reflection - how far are you looking? 5 metres? Or 10 metres?

*Strokes chin*
That was on a entrance exam..i remember reading it!!
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luk333
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(Original post by The_Goose)
10
No. 5.
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Ice_Queen
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5.
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fps_cam
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Youre surely 'looking' 5 metres, as the image inside the mirror is virtual, but it appears as if you are looking 10 metres.
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luk333
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(Original post by fps_cam)
Youre surely 'looking' 5 metres, as the image inside the mirror is virtual, but it appears as if you are looking 10 metres.
Indeed.
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Usman938
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7.5kg
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Inside
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The image of an object in a mirror appears to be as far behind the mirror as the object is in front.

So it's 10.
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The_Goose
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well yea your 5 meter from the mirror, and the image of your reflection but you are esential 10 meters from yourself if you were in the mirror
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imtired
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the mirror is 5 meters away, but if you focus on your reflected image you're looking 10 meters away. i remeber at the optician i was looking at the lights in a mirror on the other side of the room, do they not do this so that you're looking at a distance twice the lenght of the room?
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madima
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5 metres. it's not 5 metres and another 5 metres -- it's the same 5 metres twice.
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Oddball
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(Original post by kam_007)
That was on a entrance exam..i remember reading it!!
That's not where I got it from, but it's a good question, there's a lot of disagreement here...!
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Inside
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(Original post by madima)
5 metres. it's not 5 metres and another 5 metres -- it's the same 5 metres twice.
Lol. So you're looking 10 metres away.
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madima
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(Original post by Inside)
Lol. So you're looking 10 metres away.
no... that's like saying that giving you 2 cars would get you to work twice as fast.
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luk333
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(Original post by Inside)
Lol. So you're looking 10 metres away.
Nooooooo that's what the mirror want's you to think, dont listen to the evil, shiny thing!

The light travels 5m away from your body, and 5m back, so 10m. But the mirror is 5m away, and your looking at the surface of the mirror, so your looking 5m!
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Inside
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(Original post by luk333)
Nooooooo that's what the mirror want's you to think, dont listen to the evil, shiny thing!

The light travels 5m away from your body, and 5m back, so 10m. But the mirror is 5m away, and your looking at the surface of the mirror, so your looking 5m!
Yeah I see what you mean now Its shiny loveliness caught me out.
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Whedonite
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If you were to focus a camera lens, i do believe it would be 10m.
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Oddball
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(Original post by luk333)
The light travels 5m away from your body, and 5m back, so 10m. But the mirror is 5m away, and your looking at the surface of the mirror, so your looking 5m!
This is what I beleive to be true, or at any rate it's what I beleive is true.

Light is making its own way to the mirror from reflections off objects in the room, yes? I guess then, the focal point of your eye is the mirror. Which is 5m away.
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Adjective
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The virtual image created is (I think) 10m away. The key word, however, is 'virtual'.
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