why is the object distance always negative?

Asked by  | 29th Apr, 2008, 09:46: PM

Expert Answer:

We always take the object distance negative due to New Cartesian Sign convention.

The 1st sign convention states that the object is taken on the left side of the mirror (lens) i.e. light is incident on mirror (lens) from the left side.

Rgds

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Answered by  | 21st May, 2008, 04:02: PM

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