1.
What is the focal length of the eye lens when the eye is fully relaxed?
Topic: Power of Accommodation
2.
How does the Tyndall Effect contribute to the colour of the sky?
3.
Which part of the eye is responsible for converting light into electrical signals?
Topic: Structure of the Human Eye
4.
A person has difficulty reading small print and needs reading glasses. What is this condition called?
5.
Which natural phenomenon demonstrates the dispersion of light through raindrops?
Topic: Dispersion of Light
6.
Why do rainbows appear only when the Sun is low in the sky?
7.
What is the reason for the apparent flattening of the sun's disc at sunrise and sunset?
Topic: Atmospheric Refraction
8.
What is the primary factor that determines the radius of a rainbow?
9.
What determines the angle of deviation of a light ray passing through a prism?
Topic: Refraction of Light through a Prism
10.
Why does a secondary rainbow have colours in reverse order compared to the primary rainbow?
11.
Why does the apparent position of the Sun change during the day?
Topic: Atmospheric Refraction
12.
Which layer of the eye contains blood vessels that nourish the eye tissues?
Topic: Structure of the Human Eye
13.
What is the main factor that affects the power of accommodation of the eye?
Topic: Power of Accommodation
14.
Which genetic inheritance pattern is most commonly associated with red-green colour blindness?
15.
Which phenomenon is responsible for the blue appearance of distant mountains?
16.
What is the role of the vitreous humour in the eye?
Topic: Structure of the Human Eye
17.
How does persistence of vision help in animation?
Topic: Persistence of Vision
18.
Why does the sky appear blue during the day?
Topic: Atmospheric Refraction
19.
Which condition is characterized by an age-related decrease in the eye's ability to focus on nearby objects?
20.
Which of the following is an example of the Tyndall Effect?
21.
Which diagnostic test is commonly used to identify colour blindness?
22.
Which type of lens is used to correct astigmatism?
23.
Which early animation device uses the principle of persistence of vision to display moving images?
Topic: Persistence of Vision
24.
Which phenomenon is responsible for the splitting of white light into its constituent colours?
Topic: Dispersion of Light
25.
What happens to the ciliary muscles when the eye focuses on a distant object?
Topic: Power of Accommodation
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