Images formed by mirrors on the screen in Reflection of Light – Class 7 Science Experiment

Chapter Name: Reflection of Light

Activity Name: Images formed by mirrors on the screen in Reflection of Light

Activity Description:

Images formed by mirrors on the screen in Reflection of Light - Class 7 Science Experiment

This experiment aims to explore the formation of images using different types of mirrors. It involves the use of concave, convex, and plane mirrors to create real and virtual images on a screen. By adjusting the distances between the candle, mirrors, and screen, participants observe how the images change.

Required Items:

  1. Concave mirror
  2. Convex mirror
  3. Plane mirror
  4. V-stand
  5. Lighted candle
  6. Thick white paper or white drawing sheet (screen)

Step by Step Procedure:

  1. Place the concave mirror on the V-stand.
  2. Position the lighted candle in front of the concave mirror.
  3. Place the thick white paper or white drawing sheet behind the candle, acting as a screen.
  4. Adjust the distances between the candle and mirror, as well as the screen and mirror, by moving them forward or backward until a clear image appears on the screen.
  5. Repeat the same process using the convex mirror and plane mirror in place of the concave mirror.

Experiment Observations:

  • Note the distance and position of the candle, mirror, and screen when a clear image is formed on the screen for each type of mirror.
  • Observe the characteristics of the images formed (real or virtual) for each mirror.


  1. Handle the mirrors carefully to avoid scratches or damage.
  2. Use a stable V-stand to support the mirrors securely.
  3. Keep the candle flame at a safe distance from flammable objects.
  4. Do not look directly at the reflected light from the mirrors to avoid eye strain.

Lesson Learnt from Experiment:

The experiment demonstrates that different types of mirrors create distinct types of images. The images formed on the screen are called real images, while the ones only visible in the mirror are virtual images. Understanding the properties of concave, convex, and plane mirrors can help comprehend their applications in various optical devices and technologies.

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