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  1. A capacitor of capacitance 100μF is charged by connecting it to a battery of voltage
  2. According to Hook’s law, force is proportional to
  3. Length of a string tied to two rigid supports is 40 cm. Maximum length
  4. The focal length of the objective of a terrestrial telescope is 80 cm
  5. If the wavelength of light in vacuum be, the wavelength in a medium of refractive index