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प्रश्न
What did Newton demonstrate by his experiments with the prism?
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उत्तर
Newton demonstrated the phenomenon of dispersion of light by his experiments with the prism. He showed that white sunlight is in fact composed of seven colours: violet, indigo, blue, green, yellow, orange and red.
संबंधित प्रश्न
What is meant by scattering of light? Use this phenomenon to explain why the clear sky appears blue or the Sun appears reddish at sunrise.
Why does the sun seem to rise two minutes before the actual sunrise and set two minutes after the actual sunset ? Explain with the help of labelled diagram.
How many colours are there in a full spectrum of white light? Write the various colours of spectrum in the order, starting with red.
Which phenomenon makes us see the sun:
a few minutes after actual sunset?
Explain why, if we look at objects through the hot air over a fire, the objects appear to be moving (or shaking) slightly.
State whether the following statements are true or false:
The scattering away of red light makes the sky appear blue during the day time.
Why are the ‘danger signal’ lights red in colour?
Explain why, when the sun is overhead at noon, it appears white, but when the same sun is near the horizon at sunset, it appears red.
The clouds are seen white. Explain
Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?
