HomeLearn Fast select Course
Show Unit/ChapterChange UnitChange SubjectLast Menu
NEET-XII-Physics

22: Photometry

with Solutions - page 2
Qstn# ii-11 Prvs-QstnNext-Qstn
  • #11
    Figure shows a glowing mercury tube. The intensities at point A, B and C are related as
    (a) B > C > A
    (b) A > C > B
    (c) B = C > A
    (d) B = C < A

    Figure
    digAnsr:   C
    Ans : Correct option
    (d)
    Here, since B and C have the same distance and lie inclined to make the the same vertical angle with the source, they will have same intensity. But, as A is nearer and forms an angle of 00 with the source, intensity of A will be greater than C or B.
    Page No 454: