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Light — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceLight3 Marks
Question
One day, Ramesh’s friend was performing their respective experiments given by their teacher. While sitting in the practical lab instead of performing experiment, Ramesh was playing with his meter scale. All the sudden, he held the scale in his hand and started moving in front of tubelight, then he observed the seven colours of white light. After sometimes, he got scolded by his lab teacher for not performing the experiment.
  1. Give the name of phenomenon that leads to the formation of band of seven colours.
  2. Name the constituent colours of white light.
  3. Mention the values shown by Ramesh here.
✓

Answer

  1. Dispersion of white light is the name of phenomenon which leads to the formation of band of seven colours.
  2. There are seven constituent colours of white light, they are Violet, Indigo, Blue, Green, Yellow, Orange, Red $($i.e. $VIBGYOR).$
  3. Ramesh seems to be quite innovative with respect to the scientific methods and also very eager to learn science regarding phenomena.

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