Kaleidoscope | POEM

The story revolves around a great emperor who challenges his subjects to invent the most useful item, promising a reward of 3,500 chocolate biscuits. Various inventions are presented, including windscreen wipers for spectacles, square tomatoes, and a self-sharpening pencil, but none win the prize. A man presents a kaleidoscope, initially dismissed by the emperor as useless. However, upon trying it, the emperor is captivated by its beauty and awards the man the prize, realizing the value of wonder and beauty.

What was the unique feature of the kaleidoscope invented by the man?

How did the emperor ultimately react to the kaleidoscope?