Find the missing term in the following series? Cornea, Iris, Pupil, Lens, ?

Which of the following represents correct matching set of part of human eye and its function? a Cornea (i) Controls the amount of light entering eye b Iris (ii) Acts as screen for the image c Pupil (iii) Holds the lens in positions d Retina (iv) Helps in focusing light and protects eye e Ciliary Muscle (v) Light enters eye through it

A

a - (v), b - (iv), c - (i), d - (ii), e - (iii)

B

a - (iv), b - (i), c - (v), d - (ii), e - (iii)

C

a - (ii), b - (iii), c - (v), d - (i), e - (iv)

D

a - (iii), b - (iv), c - (v), d - (ii), e - (i)

Match the following two sets. Set - I consists of terms related to refractive disorders, retinal and optic nerve problems. Set - II provides description of those terms. Select the correct code for indicating your answer. Set-I (Terms) Set-II (Description) (a) Astigmatism (i) It occurs when the flow of fluids in the eye is restricted (b) Glaucoma (ii) It is a hereditary disorder that causes degeneration of retina (c) Hyperopia (iii) It is the result of improper functioning of muscles of eye(s) (d) Retinitis Pigmentosa (iv) It is most commonly known as farsightedness, results from the failure of cornea (v) Result in blurred vision, caused by an uneven curve of cornea or lens of eye

A

(a) - (v), (b) - (i), (c) - (iv), (d) - (ii)

B

(a) - (iv), (b) - (v), (c) - (i), (d) - (ii)

C

(a) - (iii), (b) - (iv), (c) - (v), (d) - (i)

D

(a) - (ii), (b) - (iii), (c) - (iv), (d) - (v)

Match the following and mark the correct option A. Cornea (i) Changes focal length of eye lens B. Iris (ii) Forms image C. Ciliary muscles (iii) Give distinct color to eye D. Retina (iv) Protects eyes

A

A - (ii), B - (i), C - (iv), D - (iii)

B

A - (iv), B - (i), C - (iii), D - (ii)

C

A - (iv), B - (iii), C - (i), D - (ii)

D

A - (ii), B - (iii), C - (i), D - (iv)

Given below are four statements- (p) The second principal focus of a lens is the position of the object, real or virtual whose image is at infinity. (q) The second principal focus of a lens is the position of the image, real or virtual whose object is at infinity. (r) The first principal focus of a lens is the position of the object, real or virtual whose image is at infinity. (s) The first principal focus of a lens is the position of the image, real or virtual whose object is at infinity. Examine the above statements and find which among then are correct.

A

(q) & (r)

B

(p) & (s)

C

(q) & (s)

D

(p) & (r)

Which of the following statements is/are true of the human eye lens? Choose the correct answer from the code given below: (i) It is a convex lens (ii) It is a concave lens (iii) It is a convex lens of variable focal length (iv) It forms a real and inverted image of a distant object at the retina

A

(i) only

B

(i) and (iii) only

C

(i) (iii) and (iv) only

D

(ii) and (iii) only

Which statement is correct about telescope: a) The focal length of the objective lens is more than the eyepiece. b) The focal length of the eyepiece is more than the objective lens. c) The aperture of the objective lens is more than the eyepiece. d) The aperture of the eyepiece is more than the objective lens.

A

Statement a and c are correct

B

Statement a and d are correct

C

Statement b and c are correct

D

Statement b and d are correct

Accommodation is a process in the eye where
1. Ciliary muscles attached to the lens
flatten it for distant objects
2. Ciliary muscles attached to the lens thicken for closer objects
3. Ciliary muscles flatten the lens for closer objects
4. Ciliary muscles thicken the lens for distant objects
Select the correct answer from the options given below:

A

1 and 2

B

3 and 4

C

1 and 3

D

2 and 4

Arrange the following in the sequence of how we are able to see. 1. Cornea 2. Electrical signal 3. Iris 4. Photons 5. Retina

A

1 - 4 - 2 - 3 - 5

B

1 - 3 - 5 - 4 - 2

C

4 - 1 - 3 -2 - 5

D

4 - 1 - 3 - 5 - 2

Identify the diagram that best represents the relationship among the classes given below. Cornea, Eyes, Iris

A

Test 8 L1 Radhika Mar 17 29q Revd hindi reviewed images Q18

B

Test 8 L1 Radhika Mar 17 29q Revd hindi reviewed images Q18a

C

Test 8 L1 Radhika Mar 17 29q Revd hindi reviewed images Q18b

D

Test 8 L1 Radhika Mar 17 29q Revd hindi reviewed images Q18c

When is a series of terms said to be in the order of increasing extension? (A) When each term in the series (except the first) denotes a class having more members than a class denoted by the term preceding it. (B) When the class size gets larger with each successive term. (C) When each term in the series (except the first) denotes a class having fewer members than the class denoted by the term preceding it. (D) When the class size gets smaller with each successive term Choose the most appropriate answer from the options given below :

A

Only (A) and (B) are correct

B

Only (B) and (D) are correct

C

Only (C) and (D) are correct

D

Only (A) and (D) are correct

Find the missing term in the following series? Cornea, Iris, Pupil, Lens, ?

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