A $10\, kW$ transmitter emits radio waves of wavelength $500\, m$. The number of photons emitted per second by the transmitter is of the order of
A $10\, kW$ transmitter emits radio waves of wavelength $500\, m$. The number of photons emitted per second by the transmitter is of the order of
- [AIEEE 2012]
- A
${10^{37}}$
- B
${10^{31}}$
- C
${10^{25}}$
- D
${10^{43}}$
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Monochromatic light of frequency $6.0 \times 10^{14}\,\, Hz$ is produced by a laser. The power emitted is $2 \times 10^{-3}\,\, W.$ The number of photons emitted, on the average, by the source per second is
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- [AIPMT 2007]
Dual nature of radiation is shown by
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