engineering recuitment Gujarat Metro JE Mock Test 2023 Heat Transfer Radiation Absorptivity, Reflectivity and Transmissivity
Consider the following table:
a – Absorptivity; b – Reflectivity; c – Transmissivity
|
Column 1 |
Column 2 |
||
|
1 |
Black Body |
A |
a = 1, b = 0, c = 0 |
|
2 |
Opaque Body |
B |
a = 0, b = 1, c = 0 |
|
3 |
White Body |
C |
a + b = 1, c = 0 |
|
4 |
Gray Body |
D |
a = b = c = constant |
1
1 – B; 2 – C; 3 – A; 4 – D
2
1 – A; 2 – C; 3 – B; 4 – D
3
1 – C; 2 – B; 3 – A; 4 – D
4
1 – A; 2 – B; 3 – C; 4 – D