Sonali & Janata Bank › Officer (IT) › 2020 – Written (DU) › A barcode reader emits ____.

A barcode reader emits ____.

A barcode reader emits ____.

a) sound
b) light
c) beeps
d) smell

From the Sonali & Janata Bank Officer (IT) 2020 – Written (DU) exam, question 29 of 50.

More from this paper

Previous: The job of ____ is to translate the array of dots into text.
Next: In a plasma display, gas is electrified by grid of ____.
All questions in Sonali & Janata Bank Officer (IT) 2020 – Written (DU)