Chemical Engineering Exam > Chemical Engineering Questions > Electromagnetic waves strikes a hot body main...
Start Learning for Free
Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident flux
- a)168.67 W/m2
- b)178.67 W/m2
- c)188.67 W/m2
- d)198.67 W/m2
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Electromagnetic waves strikes a hot body maintained at 900 degree Cels...
Absorptivity + Reflectivity + Transmissivity = 1. So, incident flux = 60/0.318 = 188.67 W/m2.
Most Upvoted Answer
Electromagnetic waves strikes a hot body maintained at 900 degree Cels...
Understanding the Problem
When electromagnetic waves strike a hot body, the energy can be reflected, transmitted, or absorbed. The sum of these three properties must equal 1:
- Reflectivity (ρ) = 0.66
- Transmissivity (τ) = 0.022
- Absorptivity (α) = 1 - (ρ + τ)
Given that the absorbed flux (α * I) is 60 W/m2, we need to determine the rate of incident flux (I).
Calculating Absorptivity
To find absorptivity (α):
- α = 1 - (ρ + τ)
- α = 1 - (0.66 + 0.022) = 1 - 0.682 = 0.318
Using the Relationship Between Absorbed Flux and Incident Flux
The relationship between the absorbed flux, incident flux, and absorptivity is given by:
- Absorbed flux = α * I
Substituting the values:
- 60 W/m2 = 0.318 * I
To find the incident flux (I):
- I = 60 W/m2 / 0.318 = 188.67 W/m2
Conclusion
The rate of incident flux is 188.67 W/m2, which corresponds to option 'C'.
This calculation demonstrates the importance of understanding the interactions of electromagnetic waves with materials and how to apply fundamental principles to derive key quantities in thermal radiation.
When electromagnetic waves strike a hot body, the energy can be reflected, transmitted, or absorbed. The sum of these three properties must equal 1:
- Reflectivity (ρ) = 0.66
- Transmissivity (τ) = 0.022
- Absorptivity (α) = 1 - (ρ + τ)
Given that the absorbed flux (α * I) is 60 W/m2, we need to determine the rate of incident flux (I).
Calculating Absorptivity
To find absorptivity (α):
- α = 1 - (ρ + τ)
- α = 1 - (0.66 + 0.022) = 1 - 0.682 = 0.318
Using the Relationship Between Absorbed Flux and Incident Flux
The relationship between the absorbed flux, incident flux, and absorptivity is given by:
- Absorbed flux = α * I
Substituting the values:
- 60 W/m2 = 0.318 * I
To find the incident flux (I):
- I = 60 W/m2 / 0.318 = 188.67 W/m2
Conclusion
The rate of incident flux is 188.67 W/m2, which corresponds to option 'C'.
This calculation demonstrates the importance of understanding the interactions of electromagnetic waves with materials and how to apply fundamental principles to derive key quantities in thermal radiation.
|
Explore Courses for Chemical Engineering exam
|
|
Similar Chemical Engineering Doubts
Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer?
Question Description
Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer?.
Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer?.
Solutions for Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemical Engineering.
Download more important topics, notes, lectures and mock test series for Chemical Engineering Exam by signing up for free.
Here you can find the meaning of Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Electromagnetic waves strikes a hot body maintained at 900 degree Celsius which has a reflectivity of 0.66 and a transmissivity of 0.022. Let the absorbed flux be 60 W/m2. Determine the rate of incident fluxa)168.67 W/m2b)178.67 W/m2c)188.67 W/m2d)198.67 W/m2Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Chemical Engineering tests.
|
|
Explore Courses for Chemical Engineering exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup