(a) Define the terms: (i) Solid angle (ii) luminous flux (iii) Lumen…

Previous year question for Utilization of Electrical Energy.

Question

(a) Define the terms:

(i) Solid angle

(ii) luminous flux

(iii) Lumen

(iv) Candle power

(v) Luminous intensity

(vi) Luminous efficiency

(b) State and prove the laws of illumination.

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