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In the mirror formula 1/v + 1/u = 1/f, what does u represent?
Answer & Solution
Correct answer: B.
1. The mirror formula relates v, u and f.
2. u is the object distance, measured from the pole.
3. v is the image distance and f the focal length.
_Source: NCERT Class 10 Science, Ch 9 "Light Reflection and Refraction", §9.2.4_
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