Human Eye and Colourful World (10)
Power of Accommodation; Defects and Correction - Myopia, Hypermetropia, Presbyopia; Prism; Atmospheric Refraction; Scattering of Light
The colour of clear sky from the earth appears blue
The colour of clear sky from the earth appears blue but from the space it appears black. Why ?
Identify the defect of vision shown
Observe the following diagram and answer the questions following it :
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Write the importance of ciliary muscles in the human eye
Write the importance of ciliary muscles in the human eye. Name the defect of vision that arises due to gradual weakening of the ciliary muscles
...Write the function of each of the following parts of human eye
Write the function of each of the following parts of human eye :
...A student is unable to see clearly the words written on the black board
A student is unable to see clearly the words written on the black board placed at a distance of approximately 3 m from him. Name the defect of
...When do we consider a person to be myopic or hypermetropic
When do we consider a person to be myopic or hypermetropic ? List two causes of hypermetropia. Explain using ray diagrams how the defect
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