Home › UP Board Class 10 › Science › The Human Eye and the Colourful World › The size of the pupil is controlled by the:
The size of the pupil is controlled by the:
Answer & Solution
Correct answer: C.
1. The iris is the coloured muscular diaphragm behind the cornea.
2. It opens (dilates) or closes (constricts) the pupil aperture.
3. This regulates the amount of light entering the eye.
_Source: NCERT Class 10 Science, Ch 10 "The Human Eye and the Colourful World", §10.1_
Related questions
The apparent flattening of the Sun's disc at sunset is due to:A child cannot read words on the blackboard clearly. The likely defect and correction are:The image formed on the retina by the human eye is:Scattering of light is most pronounced when the wavelength of light is:Why must we hold a book about 25 cm away to read it comfortably?The eye lens is described as which type of biconvex structure?A 10-cm-tall object placed 30 cm in front of a 20-cm concave mirror has an image at:Why don't the planets twinkle but stars do?