Class X

The phenomena of light responsible for the working of the human eye is
  1. Reflection
  2. Refraction
  3. Power of accommodation
  4. Persistence of vision
The amount of light entering the human eye is controlled by
  1. Ciliary muscles
  2. Pupil
  3. Cornea
  4. Iris
The colored light that refracts most while passing through a prism is
  1. Yellow
  2. Violet
  3. Blue
  4. Red
The change in the focal length of human eye is caused due to
  1. Ciliary muscles
  2. Pupil
  3. Cornea
  4. Iris
The part of the eyes refracts light entering the eye from external objects?
  1. Lens
  2. Cornea
  3. Iris
  4. Pupil
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