MCQ Question: (Q.23)
What is a light pen?
Options:
A. Mechanical Input device
B. Optical input device
C. Electronic input device
D. Optical output device
Correct Answer: Option B. Optical input device
Options:
A. Mechanical Input device
B. Optical input device
C. Electronic input device
D. Optical output device
Correct Answer: Option B. Optical input device