Discussion
Assertion (A): The two degree and ten degree observers give measurably different results.
Reason (R): The receptor composition of the retina changes with distance from the fovea.
Answer: D
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the mechanism. A ten degree field extends well beyond the fovea, where the macular pigment is thinner and the S cone proportion differs, so the effective spectral sensitivity is not the same. Tristimulus values computed on the two observers differ measurably, particularly in the blue, which is why the observer must always be stated with a result.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development