Several things are noticeable in the film.
The tick of his head is tied to the wall.
The reclining part of the chair is broken.
There is no pile of extra books on his table.
The door is closed.
He is reading attentively. There are rumors that he did not read the same book twice. He tied the ticket because it distracted him from reading in the air. And Jhimuni will actually run when Jhimuni pulls on it. He has broken the reclining part of the chair because if he leans on it, laziness will surround him.
He didn't put extra books on the table because he didn't want his attention to be diverted from what he had read.
Anyway, the man in the picture is nobody else. Proverbial Pandit Ishwar Chandra Vidyasagar. We have learned to recognize letters by reading his alphabet book ....
Issor chandro biddha sagor is this parson as if read more and more