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