Bhubaneswar, April 12 -- Illusion is derived from the word illudere, which means to mock or trick. So the primary idea of an optical illusion is to deceive the human brain by tricking it.

There are three types of optical illusions- literal, physiological, and cognitive.

The beauty of optical illusions is that they engage the user's attention for a brief time, which helps sharpen the brain.

So if you are an optical illusion enthusiast, here's one that might intrigue you. It challenges you to spot four socks among bows within 12 seconds.

The picture shows a sea of bows with nine rabbits. What makes it difficult to spot the socks is that they are perfectly camouflaged between the bows.Pic Credit: Instagram/dudolf

The illustration was ma...