Optics Question 487
Question: 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
[CPMT 1984, 1996]
Options:
A) 1 : 1
B) 2 : 1
C)
D) 3 : 2
Show Answer
Answer:
Correct Answer: C
Solution:
Illuminance at A,
Illuminance at B,
