Q11 of 38 Page 454

Figure (22-Q1) shows a glowing mercury tube. The intensities at point A, B and C are related as


Point A is nearest point to the mercury tube, whereas point B and C are away from the source and the beam of light falls on point B and C obliquely. So, intensity at point A is maximum and for point B and C its same.


B = C > A


So, correct option is C.

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