Question

How many images of a candle will be formed if it is kept between two plane mirrors parallel to each other?

Answer 1

Hint: In order to answer this question, we need to understand the reflection by plane mirror. Plane mirrors form erect, the same size as object and virtual image. The distance of the image and distance of object will always be equal from the pole.

Complete step-by-step solution:
If we place a candle between two plane mirrors, it will show multiple reflection i.e., the reflection takes place more than once.
Let’s us understand this phenomenon below:
If we place an object between two plane mirrors, first we assume that it will be reflected by the left mirror, then the image formed in the left mirror will become the object of the $2nd$ mirror. And then the image by $2nd$ mirror will become the object of the $ 3rd $ mirror and so on. This process will continue infinite times and thus, the images formed by mirrors will be infinite. This phenomenon is called Multiple reflection.
Similarly, with candles, the images of candle forms will be infinite.
Final answer: The images formed by the mirrors will be infinite.

Note: The plane mirror always forms virtual images so that it is erect and cannot be taken on screen. The distance between the object and the pole is equal to the distance between the image and the pole. Plane mirrors always form the image the same size as the object.