Output power of He-Ne LASER of low energy is 1.00 mW. Wavelength of the light is 632.8 nm. Wha

step 1 Okay, the co -chain is a helium neon laser has a power output of 1 million watt of light of wave

Output power of He-Ne LASER of low energy is 1.00 mW....

Output power of He-Ne LASER of low energy is $1.00 \mathrm{~mW}$. Wavelength of the light is $632.8 \mathrm{~nm}$. What will be the number of photons emitted per second from this LASER? (A) $8.31 \times 10^{15} \mathrm{~s}^{-1}$ (B) $5.38 \times 10^{15} \mathrm{~s}^{-1}$ (C) $1.83 \times 10^{15} \mathrm{~s}^{-1}$ (D) $3.18 \times 10^{15} \mathrm{~s}^{-1}$

Output power of He-Ne LASER of low energy is $1.00 \mathrm{~mW}$. Wavelength of the light is $632.8 \mathrm{~nm}$. What will be the number of photons emitted per second from this LASER?
(A) $8.31 \times 10^{15} \mathrm{~s}^{-1}$
(B) $5.38 \times 10^{15} \mathrm{~s}^{-1}$
(C) $1.83 \times 10^{15} \mathrm{~s}^{-1}$
(D) $3.18 \times 10^{15} \mathrm{~s}^{-1}$

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Key Concepts

Photon Energy

Photon energy is a fundamental concept in quantum mechanics that quantifies the energy carried by a single photon. It is given by the relation E = hc/?, where h is Planck's constant, c is the speed of light, and ? is the wavelength of the photon. This relationship underscores the quantized nature of electromagnetic radiation.

Relationship Between Power and Photon Emission

The power of a light source represents the energy delivered per unit time. When considering a source like a laser, the number of photons emitted per second can be calculated by dividing the total power by the energy of a single photon. This connects the macroscopic measurement of power to the quantum mechanical concept of photon energy.

Unit Conversion and Consistency

Ensuring that units are consistent is critical in any physical calculation. For example, wavelengths must be converted into meters and power into watts before using them in calculations involving physical constants. This practice prevents calculation errors and ensures that the correct relationships between variables are maintained.

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