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  1. The equiconvex lens has focal length f. If it is cut perpendicular to the principal
  2. The wavelength λₑ of an electron and λₚ of a photon are of same energy E are related by
  3. A person has a minimum distance of distinct vision as 50 cm. The power of lenses
  4. If the pressure of gas is increased from 1.01×10⁵ Pa to 1.165×10⁵ Pa and volume
  5. The product of pressure and volume hve thesame units as the product of