PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo
Fix a white sheet of paper on a drawing board or a table. Take a comb and close all its openings except one in the middle. You can use a strip of black paper for this purpose. Hold the comb perpendicular to the sheet of paper. Throw light from a torch through the opening of the comb from one side. With slight adjustment of the torch and the comb you will see a ray of light along the paper on the other side of the comb. Keep the comb and the torch steady. Place a strip of plane mirror in the path of the light ray. What do you observe?
 
YCIND_230224_5053_Light_CBSE 8th_3_23.png
Arrangement for showing reflection
  
It is observed that after striking the mirror, the ray of light is .
 
We can see the relationship between the angle of incidence and angles of reflection. Angles are the .
 
The angle of incidence is always  the angle of reflection, this is the .