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State mirror formula. How does 'f' chang...

State mirror formula. How does 'f' change when object distance 'u' from the mirror is changed?

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### Step-by-Step Solution: 1. **State the Mirror Formula**: The mirror formula relates the object distance (u), the image distance (v), and the focal length (f) of a mirror. The formula is given by: \[ \frac{1}{f} = \frac{1}{v} + \frac{1}{u} \] ...
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