Heat Radiation MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Heat Radiation, a fundamental topic in the field of Heat Transfer. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Heat Radiation MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Heat Radiation mcq questions that explore various aspects of Heat Radiation problems. Each MCQ is crafted to challenge your understanding of Heat Radiation principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Heat Transfer tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Heat Radiation MCQs are your pathway to success in mastering this essential Heat Transfer topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Heat Radiation. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Heat Radiation knowledge to the test? Let's get started with our carefully curated MCQs!

Heat Radiation MCQs | Page 4 of 21

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Q31.
Let 220 W/m² of radiant energy is absorbed by a convex surface, 90 W/m² is reflected and 40 W/m² is transmitted through it. What is the value of absorptivity?
Discuss
Answer: (b).0.62
Discuss
Answer: (d).Emissivity is constant
Q33.
Which quantity can be neglected for gases?
Discuss
Answer: (b).Reflectivity
Discuss
Answer: (a).Under thermal equilibrium conditions
Q35.
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
Discuss
Answer: (c).188.67 W/m²
Discuss
Answer: (c).Movement of discrete packets of energy as electromagnetic waves
Discuss
Answer: (d).Radiation travels in medium or without medium
Q38.
Radiation exchange occurs in
Discuss
Answer: (b).Vacuum
Q39.
Energy released by a radiating surface is not continuous but is in the form of successive and separate packets of energy called
Discuss
Answer: (a).Photons
Q40.
The electromagnetic waves are emitted as a result of

(i) Vibrational movement
(ii) Rotational movement
(iii)Atomic or sub-atomic particles comprising the matter

Identify the correct statement
Discuss
Answer: (d).1, 2 and 3