Question

An object is placed between two parallel mirrors, then the number of images formed are.
 A. 0
B. 2
C. $\infty $
D. 4

Answer 1

Hint: When we place an object in between two parallel mirrors that is the difference between the angle of the mirrors is ${{0}^{\circ }}$ then one of the mirrors will reflect at first then the other and then that reflection will be reflected again and in this way, the image will be formed.

Formula Used:
$f'=f\left( \dfrac{\upsilon +{{v}_{o}}}{\upsilon -{{v}_{s}}} \right)$

Complete step by step answer:
A mirror is generally an object which reflects an image, it is a glass with one side coated with a metallic compound which is the reason it reflects clear images.
Here according to the question, it says that if an object is placed between two parallel mirrors then the number of images formed will be infinite, but they will have a decreasing intensity as each image will be a reflection of the image in the mirror, and we must also note that each time the image is formed it tends to get back inside the mirror.
Therefore option C, that is infinity is the correct option.

Additional Information:
Intensity is known as the power transferred per unit area, that is when the area is measured on the plane perpendicular to the direction of propagation of energy. So the intensity of light is how much bright or intense the light is how much visible the light makes an object.

Note:
As the images produced after the first reflection are a reflection of the image in the mirror itself so the intensity of the image lessens. This phenomenon goes on that if one image is the reflection of another image then that reflection becomes the object and again reflects in this way it produces infinite images.