CBSE ENGLISH LANGUAGE & LITERATURE

Detailed explanation-1: -The boys were looking at the footsteps at the stairs of their house in London. While they looked at the footprint, another footprint also appeared. The boys started following the footprints and they kept on disappearing. The footprints were nothing else but a scientist discovering how to make humans transparent.

Detailed explanation-2: -Q. Why were the Boys surprised to see a Barefooted Man in London? It was an unusual sight to see someone this way. Everybody in London moved around in Shoes. It was pretty cold to move around Bare feet.

Detailed explanation-3: -The story opens with the narrator stating that two boys started wondering after seeing the fresh muddy impressions of bare feet. On seeing that, they questioned each other as to what the barefoot man was doing on the stairs of a house in the middle of London.

Detailed explanation-4: -Solution : The two boys in London were surprised and fascinated when they saw fresh muddy footprints of a human being on the steps of a house, but no man was there making them!

Detailed explanation-5: -The medicine lowered the refractive index of his body; in order to be invisible, he had to remove his clothes. When the boys saw the muddy footprints appearing from nowhere, it was actually Griffin walking on the road with muddy feet.