16. Match the words in Column-A with that in Column-B and choose the correct alternative. A. Column-A Column-B Iris (1) Helps in formation of the image of an object B. Cornea (ü) Controls the entry of light in eye C. Retina (ii) Helps in accommodation of eye D. Ciliary muscle (iv) Acts as a refractive medium (a) A-(iv), B - (ii), C-(i), D - (iii) (b) A -(i), B - (iii), C-(iv), D - (ii) (c) A-(iii), B - (iv), G-(ii), D-(i) (d) A-(ii), B - (iv), C-(i), D-(iii)
Answers
The words in Column-A matched with that in Column-B by choosing correct alternative as follows:
A. Iris - 2. Controls the entry of light in eye
B. Cornea - 4. Acts as a refractive medium
C. Retina - 3. Helps in formation of the image of an object
D. Ciliary muscle - Helps in accomodation of eye
Iris is a diaphragm and it helps in controlling size of pupil, which in turn, controls the amount of light entering the eye.
Cornea is a thin membrane in the form of transparent bulge in the front of the eye. It can control the amount of light entering the eye.
Retina is a membrane possessing a huge number of light sensitive cells. The image of the object is formed on retina.
Ciliary muscles are attached to eye lens and modify its curvature. This helps in accommodation of eye.
Accomodation is the ability of eye to modify its focal length.
The correctly matched options are:
A - 2
B - 4
C - 3
D - 1