To show the increased width of the room one should use :

Question

Accepted Answer

To show the increased width of a room, one should use horizontal stripes on the wall. This is because horizontal stripes create an optical illusion that makes the walls appear wider than they actually are. The human eye tends to follow the direction of the stripes, which in this case, run horizontally. This visual effect can make a room feel more spacious and open, enhancing the perception of width.

Now, let's examine why the other options are incorrect:

1. **Vertical lines on the wall**: Vertical lines draw the eye upward, which can make a room feel taller rather than wider. This is useful for rooms with low ceilings but does not contribute to the perception of increased width.

2. **Advancing colours**: Advancing colours are typically warm and bright hues that can make walls appear closer than they are, which can actually make a room feel smaller and more enclosed rather than wider.

3. **Long curtains**: Long curtains can add a sense of height to a room, similar to vertical lines, but they do not contribute to the perception of increased width. They are more effective in making a room feel taller.

In conclusion, horizontal stripes on the wall are the most effective way to create the illusion of increased width in a room, as they guide the eye along the length of the wall, enhancing the perception of spaciousness.