physics revision

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Across
  1. 4. /energy stored in moving motor
  2. 6. / energy stored in objects on particular heights
  3. 7. / oscillation parallel to the direction of the particles
  4. 8. / unit of radioactivity
Down
  1. 1. /used to kill microbes
  2. 2. / number of radiations per second
  3. 3. /unit of speed
  4. 5. / a rays of light passing obliquely through the interface between two medium