Boojho stands at A just on the side of a plane mirror as shown in Fig.. Can he see himself in the mirror?

Boojho can see image of an object if the reflected ray can reach his eyes. Reflected rays from P and Q can reach the eyes of Boojho, hence he can see P and Q. Reflected rays from A move away from him and never reach his eyes. Hence, he cannot see his own image. Reflected rays from R pass from under his eyes and hence he is unable to see R too.