Stars appear twinkling because of ______ of light. (1) Reflection (2) Scattering (3) Emission (4) Absorption

Stars appear twinkling because of ______ of light. (1) Reflection (2) Scattering (3) Emission (4) Absorption
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(2) Scattering Explanation: The stars' light must travel through the Earth's multi-layered atmosphere, and as it does so it is refracted (bent) multiple times and in random directions. The phenomenon of random refraction appears to make the star wink as though it is in motion. It is this action that our eyes translate as twinkling.
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Description : The danger signals are red while the eye is more sensitive to yellow because – (1) absorption in red is less than yellow and hence red is visible from a distance (2) scattering in yellow light is less than red (3) the wavelength of red light is more than yellow light (4) none of the above reasons

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Description : Who wrote the twinkling of seven stars ?

Last Answer : Written by Jahanara Imam, the twinkling of seven stars.

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Last Answer : Ans:(c)

Twinkling of stars is due to?

Description : Twinkling of stars is due to?

Last Answer : Refraction of light

Twinkling of stars is due to

Description : Twinkling of stars is due to

Last Answer : Atmospheric Refraction

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Last Answer : (3) scattering of shorter wave-lengths of sunlight in the atmosphere Explanation: The blue colour of the sky is caused by the scattering of sunlight off the molecules of the atmosphere. This scattering, ... to the direction of the sun's light is predominantly in the blue end of the spectrum.

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Description : Rainbow is formed due to – (1) refraction and dispersion (2) scattering and refraction (3) diffraction and refraction (4) refraction and reflection

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Last Answer : (4) total internal reflection Explanation: Since Torque = force x distance, to open a door easily, the handle should be fixed at the greatest distance from the hinges. If we pull with same force on a handle ... from the hinges, we will provide twice the torque, so it will be twice as easy to open.

Optical fibre works on the - (1) principle of refraction (2) total internal reflection (3) scattering (4) interference

Description : Optical fibre works on the - (1) principle of refraction (2) total internal reflection (3) scattering (4) interference

Last Answer : b) total internal reflection Explanation: Optical fiber is a cylindrical dielectric waveguide (non-conducting waveguide) that transmits light along its axis, by the process of total internal reflection.

The colour of sky appears blue due to – (1) reflection (2) refraction (3) scattering of shorter wave lengths (4) dispersion

Description : The colour of sky appears blue due to – (1) reflection (2) refraction (3) scattering of shorter wave lengths (4) dispersion

Last Answer : (3) scattering of shorter wave lengths Explanation: The sunlit sky is blue because air scatters short-wavelength light more than longer wavelengths. Since blue light is at the short wavelength end of the ... that the human eye perceives blue when looking toward parts of the sky other than the sun.

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Last Answer : refraction and reflection

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Last Answer : total internal reflection 

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Description : The colour of sky appears blue due to (1) reflection (2) refraction (3) scattering of shorter wave lengths (4) dispersion

Last Answer : scattering of shorter wave lengths

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Last Answer : scattering of shorter wavelengths of sunlight in the atmosphere

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Last Answer : Ans:(d)

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Last Answer : Ans:(c)

The bluish colour of water in deep sea is due to (a) The presence of algae and other plants found in water (b) Reflection of sky in water (c) Scattering of light (d) Absorbtion of light by sea

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Last Answer : (c) Scattering of light

Which of the following phenomena of light are involved in the formation of a rainbow? (a) Reflection, refraction and dispersion (b) Refraction, dispersion and total internal reflection (c) Refraction, dispersion and internal reflection (d) Dispersion, scattering and total internal reflection

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