THE HUMAN EYE

The term “accommodation” as applied to the eye, refers to its ability to:

• Control the light intensity falling on the retina

• Erect the inverted image formed on the retina

• Adjust the focal length of the lens

• Vary the distance between the lens and retina

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:

• Cataract

• Hypermetropia

• Myopia

• Presbyopia

When a beam of white light falls on a glass prism, the colour of light which will deviate least is:

• Violet

• Red

• Green

• Blue

Tags

NGSS.MS-PS4-2

Which of the following statement is correct?

• A person with myopia can see distant objects clearly.

• A person with hypermetropia can see nearby objects clearly.

• A person with myopia can see nearby objects clearly.

• A person with hypermetropia cannot see distant objects clearly.

The splitting of white light into its component colours is called

• refraction

• reflection

• dispersion

• tyndall effect

Type of lens used in correction of myopia

• convex lens

• concave lens

• reflecting lens

• bifocal lens

Type of lens used in correction of hypermetropia

• concave lens

• reflecting lens

• bifocal lens

• convex lens

Least distance of distinct vision for normal eye is

• 25 cm

• 50 cm

• 75 cm

• infinity

Farthest point of a normal eye is

• 25 cm

• 50 cm

• 75 cm

• infinity

………….. regulates and controls the amount of light entering the eye.

• lens

• pupil

• cilliary muscles

• none of these