Question 205: Dual Nature of Matter and Radiation

Question

If a source of power $$4kW$$ produces $${10^{20}}$$ photons/second, the radiation belongs to a part of the spectrum called

Accepted Answer

Power, $$P = {{nhv} \over t}$$
$$ \Rightarrow v = {{P 	imes t} \over {nh}}$$
$$ = {{4 	imes {{10}^3} 	imes 1} \over {{{10}^{20}} 	imes 6.63 	imes {{10}^{ - 34}}}} = 6 	imes {10^{16}}Hz$$

Answer

$$X$$ -rays

Answer

ultraviolet rays

Answer

microwaves

Answer

$$\gamma $$ - rays

Dual Nature of Matter and Radiation

If a source of power $4kW produces {10^{20}}$ photons/second, the radiation belongs to a part of the spectrum called

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