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When a beam of light (wavelength=450nm) originally traveling in air enters a piece of glass (index of refraction 1.50) what will happen to its frequency
- a)It gets reduced to ⅓ of its original value
- b)It increased by a factor of 1.50
- c)It gets unaffected
- d)It gets increased by a factor of 3
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
When a beam of light (wavelength=450nm) originally traveling in air en...
Explanation:
When light passes from one medium to another, its speed and direction change. This change causes a change in the wavelength and hence the frequency of the light. The phenomenon is known as refraction.
The frequency of the light remains constant when it passes from one medium to another, as it is a property of the light itself and does not depend on the medium. Therefore, the correct answer to the question is option 'C'.
To understand this, we can use the formula for the speed of light in a medium:
v = c/n
Where v is the speed of light in the medium, c is the speed of light in a vacuum, and n is the refractive index of the medium.
As we can see from the formula, the frequency of the light does not appear in the equation. Therefore, the frequency remains constant as the light passes from one medium to another.
We can also use the formula for the wavelength of light in a medium:
λ = λ0/n
Where λ is the wavelength of light in the medium, λ0 is the wavelength of light in a vacuum, and n is the refractive index of the medium.
As we can see from the formula, the wavelength of the light changes as it passes from one medium to another. The wavelength decreases as the speed of light decreases in the medium. However, the frequency remains constant.
Therefore, when a beam of light (wavelength=450nm) originally traveling in air enters a piece of glass (index of refraction 1.50), its frequency remains unaffected.
When light passes from one medium to another, its speed and direction change. This change causes a change in the wavelength and hence the frequency of the light. The phenomenon is known as refraction.
The frequency of the light remains constant when it passes from one medium to another, as it is a property of the light itself and does not depend on the medium. Therefore, the correct answer to the question is option 'C'.
To understand this, we can use the formula for the speed of light in a medium:
v = c/n
Where v is the speed of light in the medium, c is the speed of light in a vacuum, and n is the refractive index of the medium.
As we can see from the formula, the frequency of the light does not appear in the equation. Therefore, the frequency remains constant as the light passes from one medium to another.
We can also use the formula for the wavelength of light in a medium:
λ = λ0/n
Where λ is the wavelength of light in the medium, λ0 is the wavelength of light in a vacuum, and n is the refractive index of the medium.
As we can see from the formula, the wavelength of the light changes as it passes from one medium to another. The wavelength decreases as the speed of light decreases in the medium. However, the frequency remains constant.
Therefore, when a beam of light (wavelength=450nm) originally traveling in air enters a piece of glass (index of refraction 1.50), its frequency remains unaffected.
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When a beam of light (wavelength=450nm) originally traveling in air enters a piece of glass (index of refraction 1.50) what will happen to its frequencya)It gets reduced to ⅓ of its original valueb)It increased by a factor of 1.50c)It gets unaffectedd)It gets increased by a factor of 3Correct answer is option 'C'. Can you explain this answer?
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When a beam of light (wavelength=450nm) originally traveling in air enters a piece of glass (index of refraction 1.50) what will happen to its frequencya)It gets reduced to ⅓ of its original valueb)It increased by a factor of 1.50c)It gets unaffectedd)It gets increased by a factor of 3Correct answer is option 'C'. Can you explain this answer? for Railways 2025 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about When a beam of light (wavelength=450nm) originally traveling in air enters a piece of glass (index of refraction 1.50) what will happen to its frequencya)It gets reduced to ⅓ of its original valueb)It increased by a factor of 1.50c)It gets unaffectedd)It gets increased by a factor of 3Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Railways 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When a beam of light (wavelength=450nm) originally traveling in air enters a piece of glass (index of refraction 1.50) what will happen to its frequencya)It gets reduced to ⅓ of its original valueb)It increased by a factor of 1.50c)It gets unaffectedd)It gets increased by a factor of 3Correct answer is option 'C'. Can you explain this answer?.
When a beam of light (wavelength=450nm) originally traveling in air enters a piece of glass (index of refraction 1.50) what will happen to its frequencya)It gets reduced to ⅓ of its original valueb)It increased by a factor of 1.50c)It gets unaffectedd)It gets increased by a factor of 3Correct answer is option 'C'. Can you explain this answer? for Railways 2025 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about When a beam of light (wavelength=450nm) originally traveling in air enters a piece of glass (index of refraction 1.50) what will happen to its frequencya)It gets reduced to ⅓ of its original valueb)It increased by a factor of 1.50c)It gets unaffectedd)It gets increased by a factor of 3Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Railways 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When a beam of light (wavelength=450nm) originally traveling in air enters a piece of glass (index of refraction 1.50) what will happen to its frequencya)It gets reduced to ⅓ of its original valueb)It increased by a factor of 1.50c)It gets unaffectedd)It gets increased by a factor of 3Correct answer is option 'C'. Can you explain this answer?.
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