A bulb of 25 watts emits yellow light of wavelength 0.57 nm. The energy of photons will be ?
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E=hc/(lamda),
h=6.6*10^(-34)
c=3*10^8
so energy E=3.48*10^(-16)
h=6.6*10^(-34)
c=3*10^8
so energy E=3.48*10^(-16)
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