Question

How did one word shake patol babu emotially

Answer 1

he felt emotional because he thought that there were insulting him

Answer 2

when Patol babu came to know that his dialogue was not even a word but only a monosyllabic expression OH, then he was shaken
it shook him because he was expecting a better and bigger part and this made him feel that all these people were making a gigantic hoax of a meek and docile man like him.