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This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
1. |
What is the relation between the Energies as shown in the figure? |
A. | Er = 0 |
B. | Ea = 0 |
C. | Et = Ei |
D. | Ei = Er |
Answer» B. Ea = 0 | |
2. |
What relation between emissivity, e, and Absorptive Power, a, is given by Kirchhoff’s law? |
A. | e < a |
B. | e > a |
C. | e = a |
D. | no specific relation |
Answer» D. no specific relation | |
3. |
For an object other than a black body, it’s emissivity, e is _______________ |
A. | 1 |
B. | 0 < e < 1 |
C. | e > 1 |
D. | e = 0 |
Answer» C. e > 1 | |
4. |
From the figure, what’s the relation between T1, T2, and T3? |
A. | T1 > T2 > T3 |
B. | T3 > T2 > T2 |
C. | T3 > T1 > T2 |
D. | T2 > T1 > T3 |
Answer» C. T3 > T1 > T2 | |