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Human Eye and Colourful World Practice Questions

Class 10 · Science · 2871 free MCQs with instant results and detailed explanations.

2871
Total
926
Easy
1394
Medium
551
Hard

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Topics in Human Eye and Colourful World

Scattering of Light 1001
Defects of Vision 1085
Refraction through Prism 785

Sample Questions from Human Eye and Colourful World

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Q1
Easy
What is myopia commonly known as?
A. Nearsightedness
B. Farsightedness
C. Astigmatism
D. Presbyopia
Show Answer & Explanation
Correct Answer: A
Myopia is the condition where distant objects appear blurry while close objects can be seen clearly, hence it's called nearsightedness.
Q2
Easy
Which defect of vision is corrected by a convex lens?
A. Myopia
B. Hyperopia
C. Astigmatism
D. Color blindness
Show Answer & Explanation
Correct Answer: B
Hyperopia, or farsightedness, is corrected by using a convex lens, which helps focus images directly on the retina.
Q3
Easy
What is the main cause of astigmatism?
A. Irregular cornea
B. Lens opacity
C. Retinal detachment
D. Ageing
Show Answer & Explanation
Correct Answer: A
Astigmatism occurs due to an irregular shape of the cornea, causing blurred vision at all distances.
Q4
Medium
Which defect of vision is characterized by difficulty in seeing distant objects clearly?
A. Myopia
B. Hyperopia
C. Astigmatism
D. Presbyopia
Show Answer & Explanation
Correct Answer: A
Myopia, or nearsightedness, occurs when the eyeball is too long or the cornea is too curved, causing distant objects to appear blurry.
Q5
Medium
What type of lens is used to correct myopia?
A. Convex lens
B. Concave lens
C. Bifocal lens
D. Planar lens
Show Answer & Explanation
Correct Answer: B
A concave lens diverges light rays, helping to focus distant objects onto the retina for individuals with myopia.
Q6
Medium
Which defect of vision can be corrected using a cylindrical lens?
A. Myopia
B. Hyperopia
C. Astigmatism
D. Presbyopia
Show Answer & Explanation
Correct Answer: C
Astigmatism is caused by an irregular shape of the cornea or lens, and cylindrical lenses can correct the varying focal lengths.
Q7
Medium
The condition where the eye loses its ability to focus on nearby objects due to aging is called:
A. Myopia
B. Hyperopia
C. Astigmatism
D. Presbyopia
Show Answer & Explanation
Correct Answer: D
Presbyopia is a common age-related condition where the lens loses its flexibility, making it challenging to focus on close objects.
Q8
Hard
Which of the following defects of vision occurs due to the eyeball being too short?
A. Myopia
B. Hyperopia
C. Astigmatism
D. Presbyopia
Show Answer & Explanation
Correct Answer: B
Hyperopia, or farsightedness, occurs when the eyeball is too short, causing distant objects to be seen clearly, while near objects appear blurry.
Q9
Hard
In myopia, which lens is typically used to correct the vision?
A. Convex lens
B. Concave lens
C. Bifocal lens
D. Trifocal lens
Show Answer & Explanation
Correct Answer: B
Myopia, or nearsightedness, is corrected using a concave lens, which diverges light rays and allows the person to see distant objects clearly.
Q10
Hard
What is the primary cause of astigmatism?
A. Irregular shape of the cornea
B. Short eyeball
C. Long eyeball
D. Age-related changes
Show Answer & Explanation
Correct Answer: A
Astigmatism is caused by an irregular shape of the cornea or lens, leading to distorted or blurred vision at all distances.

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Human Eye and Colourful World — Class 10 Science Practice Questions Online

This page contains 2871 practice MCQs for the chapter Human Eye and Colourful World in Class 10 Science. The questions are organized by difficulty — 926 easy, 1394 medium, 551 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 3 topics, giving you comprehensive coverage of the entire chapter.