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Light — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceLight1 Mark
MCQ
When the Newton's disc is rotated what happens:
  • ✓
    The colours fade to white.
  • B
    The colours fade to black.
  • C
    The colours fade to red.
  • D
    The colours fade to blue.
✓

Answer

Correct option: A.
The colours fade to white.
Newton's colour disc, as the name suggests, was invented by Sir Issac Newton and is a disc with seven segments in rainbow colours.
When the disc is rotated, the colours fade to white.
In this way, Sir Isaac Newton demonstrated that white light is a combination of the seven different colours found in a rainbow.

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