a number of images that are formed if the object is placed between two mirrors at an angle. This is called multiple images.
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When two plain mirrors are placed at a 150-degree angle, multiple images are formed. The number of images formed can be calculated using the formula: ( \text{Number of images} = \frac{360}{\text{angle between the mirrors}} - 1 ). In this case, with a 150-degree angle, the calculation would be ( \frac{360}{150} - 1 = 2 ) images are formed.
With two mirrors at right angles you will have 3 (360/90 - 1) images of an object. Two of these are primary and the third is secondary. Some light rays from the object bounce of each of the mirrors to your eye to form the two primary images. But there are other rays that bounce off a mirror onto the second mirror before they get to you. This produced the secondary image.
Virtual images.
They are 'mirror images'
People generally have an easier time forming visual images than images of other sensory experiences.