Q2 of 38 Page 453

The luminous flux of a 1 W sodium vapour lamp is more than that of a 10 kW source of ultraviolet radiation. Comment.

The luminous flux of 10kW source of ultraviolet radiation is comparatively more as compared to 1W sodium vapour lamp. The luminosity of the 10kW source of ultraviolet radiation is zero and for 1W sodium vapour lamp it is non zero.


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