Reflections in Reflection of Light – Class 7 Science Experiment
Chapter Name: Reflection of Light
Activity Name: Reflections in Reflection of Light
Activity Description:
Participants use a 1ft. × 1ft. mirror placed on the floor. They, along with their friends A, B, and C, stand on four sides of the mirror to view the reflected images. The goal is to adjust their positions so that each person can see the image of the person opposite them in the mirror.
The experiment aims to understand the concept of reflection of light and the conditions required for seeing reflected images.
Required Items:
Mirror (1ft. × 1ft.)
Step by Step Procedure:
- Place the mirror on the floor.
- You and your friends A, B, C stand on four sides of the mirror.
- Adjust your positions until each person can see the image of the person opposite them in the mirror.
- Observe and note down the findings.
Experiment Observations:
- Friends A and C can see images of each other in the mirror.
- You (the observer) cannot see the images of your friends A and C in the mirror.
- When friend B moves aside from his place, you still cannot see his image in the mirror.
Precautions:
- Handle the mirror carefully to avoid any damage or injury.
- Make sure the mirror is clean and free from any dirt or smudges that could affect the observations.
- Be cautious while adjusting positions around the mirror to prevent accidents.
Lesson Learnt from Experiment:
The experiment demonstrates that to see a reflected image in a mirror, the incident ray, reflected ray, and the normal (perpendicular to the mirror surface) should lie in the same plane. When the observer (you) and the person being observed (friend B) are not in the same plane with the mirror, the reflected image is not visible to the observer.
