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Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.
Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.
Reason: Helium atoms have a meta-stable energy level.
Reason: Helium atoms have a meta-stable energy level.
- a)Both the assertion and reason are true and the reason explains the assertion.
- b)Both the assertion and reason are true but the reason does not explain the assertion.
- c)Assertion is true, but reason is false.
- d)Assertion is false, but reason is true.
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Directions: In the following question, two statements are given. One i...
Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.
Reason: Helium atoms have a meta-stable energy level.
Explanation:
To understand the given assertion and reason, we need to have some background knowledge about lasers and population inversion.
- Lasers: A laser is a device that emits a coherent beam of light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. It works by stimulating the emission of light from atoms or molecules that have been excited to higher energy levels.
- Population Inversion: In order to achieve laser action, a population inversion is necessary. Population inversion refers to a situation in which more atoms or molecules are in an excited state than in the ground state. This is crucial because it allows for the stimulated emission of photons and the amplification of light.
- He-Ne Laser: The He-Ne laser is a type of gas laser that uses a mixture of helium (He) and neon (Ne) gases as the active medium. It operates in the visible region of the electromagnetic spectrum, typically emitting red light at a wavelength of 632.8 nm.
Now let's analyze the given assertion and reason:
Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.
This assertion is true. In a He-Ne laser, the population inversion occurs between the energy levels of neon atoms. When the helium atoms are excited to higher energy levels, they collide with the neon atoms and transfer energy to them. As a result, the population of neon atoms in the higher energy levels increases, creating a population inversion.
Reason: Helium atoms have a meta-stable energy level.
This reason is also true. Helium atoms do have a meta-stable energy level. A meta-stable state refers to an excited state of an atom or molecule that has a relatively long lifetime compared to other excited states. In the case of a He-Ne laser, the helium atoms are excited to a meta-stable state, and from there, they transfer energy to the neon atoms, leading to population inversion.
Explanation of the Answer:
The correct answer is option 'B' - Both the assertion and reason are true, but the reason does not explain the assertion.
Although both the assertion and reason are individually true, they are not directly related to each other. The reason provided does not specifically explain why population inversion occurs between the energy levels of neon atoms in a He-Ne laser. The reason only mentions the meta-stable energy level of helium atoms, which is not directly connected to the assertion. Therefore, option 'B' is the correct answer.
Reason: Helium atoms have a meta-stable energy level.
Explanation:
To understand the given assertion and reason, we need to have some background knowledge about lasers and population inversion.
- Lasers: A laser is a device that emits a coherent beam of light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. It works by stimulating the emission of light from atoms or molecules that have been excited to higher energy levels.
- Population Inversion: In order to achieve laser action, a population inversion is necessary. Population inversion refers to a situation in which more atoms or molecules are in an excited state than in the ground state. This is crucial because it allows for the stimulated emission of photons and the amplification of light.
- He-Ne Laser: The He-Ne laser is a type of gas laser that uses a mixture of helium (He) and neon (Ne) gases as the active medium. It operates in the visible region of the electromagnetic spectrum, typically emitting red light at a wavelength of 632.8 nm.
Now let's analyze the given assertion and reason:
Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.
This assertion is true. In a He-Ne laser, the population inversion occurs between the energy levels of neon atoms. When the helium atoms are excited to higher energy levels, they collide with the neon atoms and transfer energy to them. As a result, the population of neon atoms in the higher energy levels increases, creating a population inversion.
Reason: Helium atoms have a meta-stable energy level.
This reason is also true. Helium atoms do have a meta-stable energy level. A meta-stable state refers to an excited state of an atom or molecule that has a relatively long lifetime compared to other excited states. In the case of a He-Ne laser, the helium atoms are excited to a meta-stable state, and from there, they transfer energy to the neon atoms, leading to population inversion.
Explanation of the Answer:
The correct answer is option 'B' - Both the assertion and reason are true, but the reason does not explain the assertion.
Although both the assertion and reason are individually true, they are not directly related to each other. The reason provided does not specifically explain why population inversion occurs between the energy levels of neon atoms in a He-Ne laser. The reason only mentions the meta-stable energy level of helium atoms, which is not directly connected to the assertion. Therefore, option 'B' is the correct answer.
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Community Answer
Directions: In the following question, two statements are given. One i...
The transition in He-Ne laser is shown below:
The electric discharge in the gas pumps the helium atoms to higher energy states (which is metastable state = 10–8 s)
These atoms collide with the ground state neon atoms and excite to higher states and produce population inversion causing a unidirectional photon beam (laser light).
These atoms collide with the ground state neon atoms and excite to higher states and produce population inversion causing a unidirectional photon beam (laser light).
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Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer?
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Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer?.
Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
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Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions: In the following question, two statements are given. One is assertion and the other is reason. Examine the statements carefully and mark the correct answer according to the instructions given below.Assertion: In He-Ne laser, population inversion takes place between energy levels of neon atoms.Reason: Helium atoms have a meta-stable energy level.a)Both the assertion and reason are true and the reason explains the assertion.b)Both the assertion and reason are true but the reason does not explain the assertion.c)Assertion is true, but reason is false.d)Assertion is false, but reason is true.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
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