Stars twinkle due to
Stars appear to twinkle in night sky on account of atmospheric refraction.
The deflection of light by minute particles and molecules of the atmosphere in all direction is called___________of light.
The said phenomenon is called scattering of light.
Which of the following diagrams represents refraction of light through a prism correctly ?
The diagram (iv) represents the correct path of fight ray passing through a prism. On account of refraction through a prism, a light ray bends towards the base of the prism.
Refraction of light by the earth’s atmosphere due to variation in air density is called
This phenomena is called atmospheric refraction.
When a beam of white light passes through a glass prism, it splits up into seven colours. This phenomenon is due to
Splitting of white light into its constituent seven colours, while passing through a prism, is on account of dispersion of fight.
The air layer of atmosphere whose temperature is less then the hot layer behave as optically
The cold air layer of the atmosphere acts as a optically denser medium than hot air because the molecules are closely packed together.
When white light passes through a glass prism
When white light passes through a glass prism, the violet coloured ray undergoes maximum deviation. The red coloured ray undergoes minimum deviation.
When white light enters a prism, it gets split into its constituent colours. This is due to
Dispersion takes place because refractive index of the material of prisra is different for different wavelength.
Which of the following phenomena of light are involved in the formation of a rainbow ?
Phenomena of refraction, dispersion and internal reflection are involved in the formation of rainbow.
The image formed on the retina of the human eye is
Eye lens is convex, in nature. So, image formed by it on the retina is real and inverted.