Question

in order to work (to be reflective on one side and a window on the other side), a one - way mirror needs ______.a difference between the light from one side to anotherdarkness on both sidesbright light on both sidesrewatch

Explanation:

A one - way mirror works based on the principle of light intensity difference. When there is a significant difference in light levels between the two sides (one side is brightly lit and the other is dimly lit or dark), it can act as a mirror on the brightly lit side (reflecting light) and as a window on the dimly lit side (allowing light to pass through). If both sides were dark, there would be no light to reflect or pass through in a way that mimics the one - way mirror effect. Similarly, if both sides were brightly lit, it would not function as a one - way mirror.

Answer:

a difference between the light from one side to another