Physics
Grade-10
Easy
Question
How many colors does a spectrum predominantly show?
- 7
- 5
- 3
- 6
Hint:
violet, blue, green, yellow, orange, and red.
The correct answer is: 7
It consists of 7 colour mainly; violet, blue, green, yellow, orange, and red. Violet colour has the shortest wavelength and red has the longest wavelength value. The mixture of all the colours of the visible colour spectrum forms white light whereas black is due to the absence of light.
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