Tag: sunlight - combination of 7 lights

Questions Related to sunlight - combination of 7 lights

Due to which property of colours they appear differently though the sunlight is passed through only one medium?

physics spectra sunlight - white and coloured sunlight - combination of 7 lights fibre optics basics

  1. Due to different refractive index with respect to medium

  2. Due to different frequencies with respect to medium

  3. Due to different amplitudes with respect to medium

  4. Due to different colour with respect to medium

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Correct Option: A
Explanation:

Refraction is a phenomenon that happens when a beam of white light passes through the interface between air and a denser medium, such as glass or water. Light travels more slowly in a denser medium, so it changes direction – or refracts – when it passes through the interface. White light is a mixture of all the wavelengths of light, and each wavelength refracts at a slightly different angle. Therefore, when the beam emerges from the denser medium, it has been split into its component wavelengths. The ones you can see form the familiar rainbow

In the spectrum of white light which color is deviated minimum ?

physics spectra sunlight - white and coloured sunlight - combination of 7 lights fibre optics basics

  1. Red

  2. Yellow

  3. Violet

  4. Blue

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Correct Option: A
Explanation:

Red colour having minimum refractive index and hence undergoes minimum deviation.


Answer-(A)

In spectrum obtained with prism which color is deviated maximum ?

physics spectra sunlight - white and coloured sunlight - combination of 7 lights fibre optics basics

  1. Violet

  2. Red

  3. Green

  4. Orange

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Correct Option: A
Explanation:

Violet colour having higher refractive index and hence undergoes maximum deviation.


Answer-(A)

Which of the following scientists did the pioneering work to understand the splitting of white light in different components ?

physics spectra sunlight - white and coloured sunlight - combination of 7 lights fibre optics basics

  1. Thomas Edison

  2. Albert Einstein

  3. Issac Newton

  4. Archimedes

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Correct Option: C
Explanation:

Newton was the first to understand that white light consists of a mix of light rays, each with a different colour.

The spreading of white light into its component colours is known as.

physics spectra sunlight - white and coloured sunlight - combination of 7 lights fibre optics basics

  1. Dispersion

  2. Deviation

  3. Refraction

  4. Diffraction

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Correct Option: A
Explanation:

$\text{Defination of Dispersion :-}$

Dispersion is the phenomenon of spreading of white light into its component colors.