Two electric bulbs have tungsten filament of same length. If one of them gives $60\ W$ and the other $100\ W$ , then
  • A$100\ W$ bulb has thicker filament
  • B$60\ W$ bulb has thicker filament
  • C
    Both filaments are of same thickness
  • D
    It is not possible to get different wattages unless the length are different
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