Which one of the following quantities forms the basis of radiometery?« Back to Previous Page
| A. Radiant energy (Q)
B. Radiant flux (φ)
C. Radiant intensity (I)
D. Radiance (L)
E. All of these | 
| ▲ ▼ | E. All of these | 
| ▲ ▼ | E. All of these | 
| ▲ ▼ | E. All of these | 
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