PHYSICS PUZZLE

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Across
  1. 2. If the object placed at centre of curvature of concave mirror is moved towards the focus the magnification will ________.
  2. 5. Type of refractive index of a medium with respect to air.
  3. 7. _______ lens is called diverging lens.
  4. 9. Incident ray falling on glass slab is ______ to emergent ray.
  5. 12. size of image formed by convex mirror.
  6. 13. Resiprocal of focal length of lens gives the value of_________.
  7. 14. Centre: Value of refractive index is zero when light ray passes through ________.
  8. 17. Type of lens which can give an enlarged image.
  9. 18. Bending of light
  10. 19. To obtain a point size image from a concave mirror the object must be placed at ____.
Down
  1. 1. Type of mirror, if the image formed is erect and enlarged
  2. 3. S.I. unit of power.
  3. 4. of mirror which gives real image of the same size.
  4. 6. Type of mirror which gives erect image of the same size of object
  5. 8. Value of refractive index if a light ray falls normally
  6. 9. Sign of focal length of convex mirror.
  7. 10. Ray: The final ray produced after refractions in glass slab
  8. 11. Bouncing back of light in the same medium after hitting a hard surface.
  9. 15. of Curvature: In a concave lens ray of light follows the same path after reflecting, if the incident ray passes through ______.
  10. 16. v/u of a lens gives the value of_____.