Podcast
Questions and Answers
What is the main function of the humours in the eyeball?
What is the main function of the humours in the eyeball?
- To prevent tears from forming
- To change eye color
- To refract light entering the eye (correct)
- To help the eye collapse
In a refracting telescope, what is the function of the eyepiece lens?
In a refracting telescope, what is the function of the eyepiece lens?
- To enlarge the image (correct)
- To collect light
- To form a real image magnified by the objective lens
- To help the telescope collapse
What is the name of the lens used in a refracting telescope to collect and focus light from a distant object?
What is the name of the lens used in a refracting telescope to collect and focus light from a distant object?
- Objective lens (correct)
- Concave lens
- Eyepiece lens
- Primary mirror
How does a reflecting telescope collect rays of light from a distant object?
How does a reflecting telescope collect rays of light from a distant object?
For a telescope to achieve the greatest magnification, what is important in terms of distance?
For a telescope to achieve the greatest magnification, what is important in terms of distance?
Which part of the eyeball is responsible for preventing it from collapsing?
Which part of the eyeball is responsible for preventing it from collapsing?
What part of the eye controls the amount of light entering?
What part of the eye controls the amount of light entering?
Which device in a camera is responsible for controlling the aperture?
Which device in a camera is responsible for controlling the aperture?
What is the natural adjustment in the size of pupils called?
What is the natural adjustment in the size of pupils called?
What part of the eye does not contain light sensitive cells?
What part of the eye does not contain light sensitive cells?
When light hits the light-sensitive chemicals in the film, what do they form?
When light hits the light-sensitive chemicals in the film, what do they form?
In a camera, where are the parts housed?
In a camera, where are the parts housed?
What serves as plane mirrors in binoculars?
What serves as plane mirrors in binoculars?
What type of lenses are used in compound microscopes to magnify the object?
What type of lenses are used in compound microscopes to magnify the object?
Which scientist used a simple convex lens to view bacteria magnified about 280 times?
Which scientist used a simple convex lens to view bacteria magnified about 280 times?
In a compound microscope, what is used to improve the sharpness of the image?
In a compound microscope, what is used to improve the sharpness of the image?
What type of lenses are commonly used in magnifying glasses?
What type of lenses are commonly used in magnifying glasses?
What is the main purpose of placing prisms inside binoculars?
What is the main purpose of placing prisms inside binoculars?
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