Question : The sky appears blue because of
Option 1: Atmospheric water vapour
Option 2: Scattering of light
Option 3: Reflection on sea water
Option 4: Emision of blue wavelength by the sun
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Correct Answer: Scattering of light
Solution : The correct option is Scattering of light.
Rayleigh scattering is responsible for the blue colour of the sky. Sunlight is made up of several colours of light with distinct wavelengths. When sunlight penetrates the Earth's atmosphere, the shorter wavelengths, mainly blue and violet, are dispersed in all directions by microscopic particles and molecules. Because of its shorter wavelength, blue light scatters more than other colours, making it more visible in our line of sight. As a result, throughout the day, the sky seems mostly blue.
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Question : Which one of the following processes is responsible for the glittering of air bubbles rising through water?
Option 1: Reflection of light
Option 2: Refraction of light
Option 3: Total internal reflection of light
Option 4: Scattering of light
Question : A mirage occurs because of:
Option 1: reflction by hot ground
Option 2: total internal reflection by layers of air
Option 3: interference of light
Option 4: diffraction of light
Question : The colour of the ocean appears to be blue because the sunlight falling on it is:
Option 1: reflected
Option 2: refracted
Option 3: diffracted
Option 4: scattered
Question : Japan is called the 'Land of the Rising Sun' because
Option 1: Sun rises there as soon as it sets
Option 2: Sun always remains in the eastern part of the sky throughout the day in Japan
Option 3: Japan being the easternmost country in the world has the earliest sunrise
Option 4: The rays of the sun get reflected from the waters of the sea and make the sunrise beautiful in Japan
Question : A pond of water appears less deep due to:
Option 1: reflection
Option 2: diffraction
Option 3: refraction
Option 4: polarisation
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