Images with Spherical mirrors in Reflection of Light – Class 7 Science Experiment

Chapter Name: Reflection of Light

Activity Name: Images with Spherical mirrors in Reflection of Light

Activity Description:

Images with Spherical mirrors in Reflection of Light - Class 7 Science Experiment

In this experiment, you will explore the properties of concave and convex mirrors by observing the formation of images when placing candles in front of them. By adjusting the position of the candles, you will observe clear images formed in the mirrors and compare their sizes with the original candle sizes.

Required Items:

  1. Concave mirror
  2. Convex mirror
  3. Two V-stands
  4. Two candles of the same size

Step by Step Procedure:

  1. Set up the experiment by placing the concave mirror on one V-stand and the convex mirror on another V-stand.
  2. Position the two candles of the same size in front of the mirrors, as shown in the figure.
  3. Adjust the positions of the candles until clear images are formed in the mirrors. You can do this by moving the candles closer or farther from the mirrors.
  4. Observe the sizes of the images formed in the mirrors and compare them with the original candle sizes.

Experiment Observations:

  • Note the difference between the size of the image and the size of the object for both the concave and convex mirrors.


  1. Handle the mirrors with care to avoid any damage.
  2. Place the mirrors on stable V-stands to prevent any accidents.
  3. Be cautious while handling candles to avoid the risk of fire.

Lesson Learnt from Experiment:

  1. In a convex mirror, the image formed is always virtual, diminished, and upright, regardless of the object’s position.
  2. In a concave mirror, the characteristics of the image formed (i.e., whether it is virtual or real, magnified or diminished, and upright or inverted) depend on the position of the object relative to the focal point of the mirror.

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