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  1. A linear aperture whose width is 0.02 cm is placed immediately in front of a lens
  2. The dimensions of Planck’s constant is same as that of
  3. A parallel plate capacitor has 91 plates, all are identical and arranged with same
  4. Two nuclei have their mass numbers into the ratio of 1:3
  5. When a mass M is attached to a spring of force constant K,