Rays of Light in Reflection of Light – Class 7 Science Experiment

Chapter Name: Reflection of Light

Activity Name: Rays of Light in Reflection of Light

Activity Description:

Rays of Light in Reflection of Light - Class 7 Science Experiment

This experiment explores the behavior of light when it passes through a small slit or hole in a black paper-covered mirror strip. The goal is to observe how the light behaves like a ray of light when passing through the slit and falling on a sheet of paper on the ground.

Required Items:

  1. Mirror strip
  2. Black paper
  3. Sheet of paper (to be spread on the ground)

Step by Step Procedure:

  1. Take a mirror strip and cover it with black paper.
  2. Cut a 1 mm wide slit in the black paper to create an opening for the light to pass through.
  3. Hold the mirror strip with the slit facing the sun.
  4. Allow the light to pass through the slit and fall on the sheet of paper spread on the ground.

Experiment Observations:

  • Light passes through the 1 mm wide slit in the black paper-covered mirror strip.
  • The light that passes through the slit behaves like a ray of light.
  • The ray of light falls on the sheet of paper placed on the ground.


  1. Be cautious when using sunlight to avoid direct exposure to the eyes.
  2. Handle the mirror strip carefully to avoid any sharp edges.

Lesson Learnt from Experiment:

Through this experiment, we learn that light passing through a small slit or hole appears like a ray of light. This observation is crucial for understanding the behavior of light and its reflection in subsequent experiments and studies.

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