TBR test 6 Question 50

[JSU]

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It says that "The image of an object that is far from a concave mirror has what location relative to the mirror and its focal point?"

The answer says that the image forms at the focal point. Which would make sense if the object were at infinity. Do you think that is a justified answer as the question says far, not "infinitely far". Also, if it is right, would the real deal be more clear?

 

[MCAT4life]

based on the thin lens equation 1/i + 1/o = 1/f now if you placed the object far the image will show up at the focal point or very close to it 1/o can get infinetly small that it because a pretty negligible value, think about a telescope, when your looking at the moon, the moon is far but it is not really at infinity since there is a measurable distance, but its close enough approximation that it is far enough so that the resulting image would be located at the focal point or very very close to it. Don't be too technical on these things, it will drive you nuts lol..