Calculating Star Image Distance in a Concave Mirror | Radius of Curvature 1.70 m

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Homework Help Overview

The discussion revolves around calculating the distance of the image formed by a concave mirror when light from a distant star reflects off its surface. The radius of curvature of the mirror is given as 1.70 m.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the assumption that the star is at an infinite distance, leading to considerations of how to represent this in a diagram. There is also discussion about the relationship between the focal length and the radius of curvature for concave mirrors.

Discussion Status

Some participants have offered insights into the properties of light and mirrors, particularly regarding the treatment of distant objects as parallel beams. However, there is a lack of consensus on the specific steps to take, and some participants express uncertainty about how to proceed.

Contextual Notes

Participants mention the challenge of drawing diagrams and the potential need for clarification on the concepts involved in the problem.

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The light from a star reflects from a concave mirror with a radius of curvature of 1.70 m. Determine how far the image of the star is from the surface of the mirror.

I also don't know how to do this one either :cry:
 
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-_-" Since the star is really really far away, set the distance of the object from the mirror to be at infinity. Then, draw the diagram. The last time I did these sort of diagrams is when I was 17, so I can't really help you much with the diagram...
 
so how exactly do I have to do this T.T...
 
Light from the star can be taken as a paralllel beam of light. When a parallel beam of light falls on a concave mirror or a convex lens they are brought to focus at the focal length. In the cas of concave mirror focal length = half the radius of curvature.
 

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