Understanding Electronic Device Matching

This question requires matching specific electronic devices from List-I with their corresponding properties or functions listed in List-II. Let's break down each item:

Matching List-I with List-II

• A. Wireless mouse: A wireless mouse connects to a computer without a physical cable. This connection is typically established using Radio waves (like Bluetooth or proprietary RF signals). Therefore, A matches with IV. Radio waves.
• B. Optical mouse: An optical mouse uses a light source (like an LED or laser) and a sensor to detect movement across a surface. While modern optical mice often use visible LEDs, older technologies or certain types might utilize Infrared light. Considering the provided options, this is the most fitting description related to the light technology used. Thus, B matches with III. Infrared light.
• C. Liquid Crystal Display (LCD): An LCD is a type of display screen that generates visible images. By definition, a device that produces visual output is an Output device. Therefore, C matches with II. Output device.
• D. Optical Character Reader (OCR): OCR technology is used to convert images of typed, handwritten, or printed text into machine-encoded text. A common application is the Reading of car number plate, where OCR software interprets the characters on the plate. Hence, D matches with I. Reading of car number plate.

Correct Option Derivation

Based on the analysis above, the correct pairings are:

• A - IV
• B - III
• C - II
• D - I

This corresponds to the option A-IV, B-III, C-II, D-I.