NDA Human Eye and Colourful World — practice questions
14 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NDA Human Eye and Colourful World in the app →The part of the eye that focuses light onto the retina by changing its shape is the:The light-sensitive layer at the back of the eye, where the image forms, is the:The defect of vision in which a person cannot see DISTANT objects clearly is:Hypermetropia (far-sightedness) is corrected using:The least distance of distinct vision for a normal eye is approximately:Dispersion of white light by a prism produces a spectrum because:A rainbow is formed by:The sky appears BLUE because of:The reddish appearance of the sun at sunrise and sunset is due to:Twinkling of stars is caused by:An old man cannot read a book held close but can see distant scenes clearly. The defect and its cure are:Tyndall effect — the visible path of a beam of light through a colloid — is a result of:The ability of the eye to focus on objects at different distances is called:Light from a star changes colour during twinkling because: