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Questions and Answers
What is the characteristic of laser light related to its wavelength?
What is the characteristic of laser light related to its wavelength?
Monochromatic, meaning it has a single wavelength.
How does the energy from a photon interact with matter?
How does the energy from a photon interact with matter?
It supplies energy, causing the system to transition to an excited state.
What happens when the system de-excites from a higher energy state to a lower energy state?
What happens when the system de-excites from a higher energy state to a lower energy state?
A photon with lesser energy is emitted due to the loss of energy through vibrational and/or rotational motion.
What is the ratio of the number of atoms in the E2 state to the number of atoms in the E1 state under thermal equilibrium?
What is the ratio of the number of atoms in the E2 state to the number of atoms in the E1 state under thermal equilibrium?
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What is the condition for a system with only two energy levels?
What is the condition for a system with only two energy levels?
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What is the unit of the Planck constant (h)?
What is the unit of the Planck constant (h)?
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What is the ratio of the number of atoms in the excited state to the number of atoms in the ground state at a temperature T, according to Boltzmann statistics?
What is the ratio of the number of atoms in the excited state to the number of atoms in the ground state at a temperature T, according to Boltzmann statistics?
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In a 1 mole of H gas at 300K, how many Hydrogen atoms are in the excited state?
In a 1 mole of H gas at 300K, how many Hydrogen atoms are in the excited state?
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What is the condition required for stimulated emission to occur?
What is the condition required for stimulated emission to occur?
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What is the main difference between spontaneous and stimulated emission?
What is the main difference between spontaneous and stimulated emission?
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In which type of transitions is stimulated emission more likely to occur?
In which type of transitions is stimulated emission more likely to occur?
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What is the condition in which the number of atoms in the excited state is higher than in the ground state?
What is the condition in which the number of atoms in the excited state is higher than in the ground state?
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