A rainbow is perhaps the most beautiful optical phenomenon. It appears as a seven-coloured arc in the sky when there are raindrops in the air. It is visible when the sun is low in the sky (early mornings and late afternoons). To see the rainbow, you have to stand with the sun behind your back.
From where does a rainbow get its colours? The colours come from the dispersion of white light by raindrops suspended in the air. Sunlight entering a drop gets refracted and is split into its component colours. The lights of the component colours travel through the drop and fall on its It other side. A part of these lights get reflected, and a part goes out. (This is not total internal reflection.) The reflected lights again fall on the surface of the drop and get refracted on the way out
Which of the following are correct ? (a) Rainbow appears as a seven-coloured arc in the sky when there are raindrops in the air it is visible when the sun is low in the sky . (b) The rainbow get its colours come from the dispersion of white light by raindrops suspended in the air . (c) Rainbow has red at the top and violet at the bottom . | |||
Right Option : D | |||
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Rainbow is caused due to - | |||
Right Option : B | |||
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Inside rain droplet, light | |||
Right Option : C | |||
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Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
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