Evan's Space

Wonders of Physics

Light – Two mirrors in parallel

4 Comments

The diagram below shows a object O placed at the middle of two parallel mirrors. Which of the following is not a possible position of image of O?

mirror2

Solutions: Option D

Based on the concept of characteristics of mirror image – Distance of object to mirror is equal to Distance of image to mirror.

Object O at the centre of two mirrors, based on the above characteristic, B and C are possible positions of image of O.

Consider A. Treating C as the object now and using the mirror on the left, distance of C to left mirror is equal to distance of A to left mirror.

Hence A is a possible position of image of O.

Consider D. Treating B as object and using the mirror on the right, distance of B to right mirror is not equal to distance of D to right mirror.

Hence D is not a possible position of image of O.

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4 thoughts on “Light – Two mirrors in parallel

  1. A ticker- tape is moved through a ticker -timer for 5.0 seconds.If the timer is operating at 25 Hz;
    a) How many dots would have been printed on the tape?
    b) What kind of motion does the tape represent? Give reason

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