General Science/Everyday Science MCQs
Topic Notes: General Science/Everyday Science
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
21
How many works did Ibn al-Haytham write?
Answer:
200
He wrote more than 200 scientific works.
22
Ibn al-Haytham identified which force?
Answer:
Gravity
He discussed gravity as a natural force.
23
Which optical tool did he help develop?
Answer:
Magnifying glass
His studies led to the development of magnifying glasses.
24
He proved that light is:
Answer:
A form of energy
He declared light as energy, centuries before modern physics.
25
Ibn al-Haytham built:
Answer:
A pinhole camera
He studied how images are formed through a pinhole camera.
26
He was the first to elaborate:
Answer:
Two laws of reflection
He scientifically described reflection before European scientists.
27
Ibn al-Haytham first proved that:
Answer:
Retina is responsible for vision
He correctly identified the role of the retina in vision.
28
His most famous book _Kitab al-Manazir_ is about:
Answer:
Optics
It detailed the nature of light and vision.
29
Ibn al-Haytham was born in:
Answer:
Basra
He was born in Basra in 965 A.D.
30
Which chemical did he NOT discover?
Answer:
Carbonic acid
He discovered many acids but not carbonic acid.
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## **Ibn al-Haytham (Alhazen)**