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A radio transmitter radiates `1 kW` power at a wavelength `198.6 m`. How many photons does it emit per second ?

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A radio transmitter radiates `1 kW` power at a wavelength `198.6 m`. How many photons does it emit per second ?
A. `10^(10)`
B. `10^(20)`
C. `10^(30)`
D. `10^(40)`
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Correct Answer - C
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