A small lamp is hung at a height of 8 feet above the centre of a round table of diameter 16 feet . The ratio of intensities of illumination at the centre and at points on the circumference of the table will be
A
1 : 1
B
2 : 1
C
D
3 : 2
Text Solution
Verified by ExpertsThe correct answer is:
C
Illuminance at A ,
Illuminance at B ,
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