If in the question (1) given above the object is placed symmetrically between the mirrors, then the number of images formed will be :

1. n
2. n + 1
3. n - 1
4. 0

In a barber's shop, two plane mirrors are placed:

1. perpendicular to each other
2. parallel to each other
3. at an angle of 60° between them
4. at an angle of 45° between them.

For two mirrors kept parallel to each other, the number of images formed is :

1. 5
2. 7
3. 0
4. infinity