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Optics — Science STD 10 — Question

Tamilnadu BoardEnglish MediumSTD 10ScienceOptics1 Mark
MCQ
The unit of focal length is:
  • A
    dioptre
  • ✓
    metre
  • C
    ohm
  • D
    ampere
✓

Answer

Correct option: B.
metre

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