Blue colour of the sky is due to the phenomenon of? Mark as favorite Copy Link Dispersion of light Refraction of light Scattering of light Reflection of light Check Answer
The variation of focal length to form a sharp image on the retina is called? Mark as favorite Copy Link Sutter Aperture Retina control Accommodation Check Answer
Assertion: The near-point of a hypermetropic eye is more than 25 cm away. Reason: Hypermetropia is corrected using spectacles containing concave lenses.? Mark as favorite Copy Link Both A and R are true but R is not the correct explanation of (a) Both A and R are true and R is the correct explanation of (a) A is false but R is true. A is true but R is false. Check Answer
The part of eye that is a messenger of electrochemical signals from eye to brain is called? Mark as favorite Copy Link Cornea Iris Optic nerve Blood vessel Check Answer
Which of the following colors is least scattered by fog, dust of smoke? Mark as favorite Copy Link Yellow Red Blue Violet Check Answer
The ability of eye lens to adjust its focal length to form a sharp image of the object at varying distances on the retina is called? Mark as favorite Copy Link Power of enabling of the eye Power of accommodation of the eye Power of adjustment of the eye Power of observation of the eye Check Answer
The black opening between the aqueous humour and the lens is called? Mark as favorite Copy Link cornea pupil iris retina Check Answer
The defect of vision in which the person is able to see distant object distinctly but cannot see nearby objects clearly is called? Mark as favorite Copy Link Hypermetropia Far-sightedness Long-sightedness All above Check Answer
A person cannot see the distant objects clearly (though he can see the nearby objects clearly). He is suffering from the defect of vision called? Mark as favorite Copy Link Presbyopia Hypermetropia Cataract Myopia Check Answer
When an object moves towards a convex lens the size of image _____? Mark as favorite Copy Link Increases Remains the same First decreases then increases Decreases Check Answer