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  1. Light from the constellation Virgo is observed to increase in wavelength by 0.4%
  2. Two charges each equal to 2µ C are 0.5m apart. If both of them exist inside vacuum
  3. A thin glass(refractive index 1.5) lens has optical power of -5D in air.
  4. A system consists of three masses m₁, m₂ and m₃ connected by a string passing
  5. A heavy stone hanging from a massless string of length 15 m is projected