Related Questions

  1. A concave lens of focal length f forms an image which is 1/3 times the size
  2. 1 Wb/m² equal to
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  4. A thin glass(refractive index 1.5) lens has optical power of -5D in air.
  5. A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time