The Human Eye and the Colorful World Objective Questions

The Human Eye and the Colorful World Objective Questions

1-An image is formed on

(A) Iris

(B) Pupil

(C) Retina

(D) Cornea

 

2-Light enters the eye through a thin membrane called the

(A) Iris

(B) Pupil

(C) Retina

(D) Cornea

 

3-The eyeball is approximately ___ in shape.

(A) Elliptical

(B) Spherical

(C) Oval

(D) None of the above

 

4-Following controls and regulates the amount light entering the eye

(A) Iris

(B) Pupil

(C) Retina

(D) Cornea

 

5-____ transmits signals to the brain.

(A) Optical nerve

(B) Aqueous humour

(C) Viterous humour

(D) eye lens

 

6-When the light is very bright, the pupil

(A) expands

(B) contracts

(C) remains same

(D) any of the above

 

7-When we are looking at objects close to the eye

(A) the ciliary muscles contract

(B) curvature of the eyes lens increases

(C) Eye lens become thicker

(D) All of the above

 

8-The ability of the eye lens to adjust its focal length is called

(A) composition

(B) accommodation

(C) accomplish

(D) none of the above

 

9-To see an object comfortably and distinctly, we must hold it about ___ cm from our eyes.

(A) 10

(B) 15

(C) 20

(D) 25

 

10-The minimum distance, at which objects can be seen most distinctly without strain, is called

(A) the near point of eye

(B) least distance of distant vision

(C) both (A) and (B)

(D) least distance of vision

 

ANSWERS:

1-(C), 2-(D), 3-(B), 4-(B), 5-(A), 6-(B), 7-(D), 8-(B), 9-(D), 10-(C)