Physics

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Across
  1. 3. Image formed behind mirror
  2. 5. R=20 cm then f=?
  3. 6. Hole in the middle of eye
  4. 9. the ends of a magnet
  5. 10. The fluid present between cornea and the eye lens
Down
  1. 1. anything that has mass and takes up space
  2. 2. positively charged particles in the nucleus of an atom
  3. 4. Voltmeter is a device used to measure
  4. 7. basic unit of matter
  5. 8. The mirror having reflecting surface curved inwards is