Photometry and Luminous Intensity - Class VIII

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Question 1 of 53

A lamp placed 60 cm from a screen produces the same illumination as a standard 100 W lamp placed 90 cm away on the other side of the screen. The luminous intensity of the first lamp is

Select Your Answer:

$49.44W$

$44.44W$

$54.44W$

$34.44W$

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