Discussion
Lamp ageing affects colour assessment because
Answer: A
Correct answer: the spectral output drifts over the life of the lamp
Phosphors degrade and electrodes deposit material on the tube, so the spectrum of an ageing lamp is not what it was when new. Since every tristimulus value depends on that spectrum, assessments drift with it - which is why viewing cabinets record lamp hours and lamps are replaced on a schedule rather than when they fail.
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