Two plane mirrors are placed making an angle 60° in between them. For an object placed in between the mirrors, the number of images formed will be .

1. 3
2. 6
3. 5
4. infinite.

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.

The number of images formed for two mirrors kept perpendicular to each other is :

1. 1
2. 2
3. 3
4. 5

A thick plane mirror, silvered at its back, forms multiple number of images. Out of these, the brightest image is :

1. first image
2. second image
3. third image
4. All are of equal brightness