Optics 7 Question 31

32. The intensity of light at a distance r from the axis of a long cylindrical source is inversely proportional to r.

(1981,2M)

Integer Answer Type Questions

Show Answer

Solution:

  1. At a distance r from a line source of power P and length l, the intensity will be,

or

I=PS=P2πrlI1r



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक