Camera pickup tubes — match each tube to its notable feature List I (Tube) A. Vidicon B. Plumbicon C. Saticon D. Newvicon List II (Special feature) 1. Highest sensitivity 2. Temperature sensitive 3. Large lag 4. Special target for improved red response

Introduction / Context:
Before solid-state image sensors, television cameras employed a range of pickup tubes with distinct target materials and behaviors. Recognizing each tube’s hallmark helps in interpreting legacy system specifications and exam questions on camera technology.

Given Data / Assumptions:

• Vidicon uses a photoconductive target; notable for image lag.
• Plumbicon (lead-oxide target) offers improved red response compared with earlier tubes.
• Saticon (Se-As-Te) exhibits temperature sensitivity in operation.
• Newvicon was developed for higher sensitivity among vidicon-type tubes.

Concept / Approach:
Associate each tube with the well-known trait emphasized in textbooks: vidicon → lag; plumbicon → better red response; saticon → temperature sensitivity; newvicon → highest sensitivity in its family.

Step-by-Step Solution:

Verification / Alternative check:
Historic broadcast engineering references compare these tubes’ sensitivity, lag, and spectral response, aligning with the matches above.

Why Other Options Are Wrong:

• Assigning “highest sensitivity” to a plain vidicon conflicts with well-known limitations.
• Swapping red response and lag traits contradicts materials behavior.

Common Pitfalls:
Assuming solid-state CMOS/CCD characteristics apply; tubes have different lag and spectral idiosyncrasies.

Final Answer:
A-3, B-4, C-2, D-1