Class 10th - Science -Human Eye - Top 40 MCQ and Assertion Reason

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Class 10th Human Eye MCQ and Assertion and Reason
Class 10th Science Most Important Questions
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CHAPTER 10 The Human Eye and the Colourful World
Class 10th Science CBSE Sample Paper
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Class 10th Science NCERT summary
Class 10th Science NCERT summary
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Class 10th Human Eye NCERT Exemplar
Power of Accommodation of Human eye
DEFECTS OF VISION AND THEIR CORRECTION
Myopia (Near Sightedness)
Hypermetropia (Far Sightedness)
Presbyopia
REFRACTION OF LIGHT THROUGH A PRISM
DISPERSION OF WHITE LIGHT BY A GLASS PRISM
Disperion of White Light
Scattering of Light
ATMOSPHERIC REFRACTION
Twinkling of stars
Advance sunrise and delayed sunset
Tyndall Effect
Why is the colour of the clear Sky Blue?
The ability of the eye to focus on both near and distant objects, by adjusting its
focal length, is called the accommodation of the eye.
The smallest distance, at which the eye can see objects clearly without strain, is
called the near point of the eye or the least distance of distinct vision. For a young
adult with normal vision, it is about 25 cm.
The common refractive defects of vision include myopia, hypermetropia and
presbyopia. Myopia (short-sightedness - the image of distant objects is focussed
before the retina) is corrected by using a concave lens of suitable power.
Hypermetropia (far-sightedness - the image of nearby objects is focussed beyond
the retina) is corrected by using a convex lens of suitable power. The eye loses its
power of accommodation at old age.
The splitting of white light into its component colours is called dispersion.
Scattering of light causes the blue colour of sky.