White light is composed of many colours .When these colour combine they look white. One way of showing that white light is composed of different colors is to make white light pass through a glass prism. This splits up the white light into its constituent colors. If you hold a screen in its path you will see band of colour this band of colours is s called the spectrum. As it’s visible to the human eye it is called the visible spectrum.
Newton’s disc is a colored disc which is painted with the colours of white light [i.e., violet, indigo, blue, green, yellow, orange, and red (VIBGYOR) in equal proportions so that when it is rotated very fast, the disc appears white. This is because of a property of our eyes called persistence of vision.
Which of the following are correct / (a) To show that white light is composed of different colors is to make white light pass through a cardboard piece . (b) Prism splits up the white light into its constituent colors. (c) If we hold a screen in the path of light coming out of a prism we will see band of colour this band of colours is called the spectrum . | |||
Right Option : B | |||
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When white light is passed through prism , it splits into ______________ | |||
Right Option : C | |||
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When the Newton’s disc is rotated ___________________ . | |||
Right Option : B | |||
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