1.

Suggest an experiment to produce a rainbow in your classroom and explain the procedure.

Answer»
  • Activity to produce a rainbow in classroom : 
  • Take a prism and place it on the table near a vertical white wall. 
  • Take a thin wooden plank, make a small hole in it and fix it vertically on the table. 
  • Place the prism between the wooden plank and wall. 
  • Place a white light source behind the hole of the wooden plank. Switch on the light.
  • Adjust the height of the prism such that the light falls on one of the lateral surfaces. 
  • Observe the changes in the emerged ray of the prism. 
  • Adjust the prism by slightly rotating it till you get an image on the wall. We observe a band of different colours on the wall. 
  • These colours are nearly equal to the colours of the rainbow, i.e., VIBGYOR.


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