6986900
Descrição
Quiz por Tom Frampton, atualizado more than 1 year ago
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Criado por Tom Frampton
mais de 7 anos atrás
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Questão 1
Questão
What type of lens is used for observing the night sky?
Responda
-
Converging
-
Diverging
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Concatonating
-
Diffracting
Questão 2
Questão
What happens to light when it passes from air into a lens?
Responda
-
It slows down
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It speeds up
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It bends towards the normal
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It bends away from the normal
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It is reflected off
Questão 3
Questão
A convex lens is a type of converging lens
Responda
- True
- False
Questão 4
Questão
What are components of a ray diagram?
Responda
-
Principal Axis
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The Singularity
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The Focal Length
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The Principal Focus
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The Headline
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The Lens Cap
Questão 5
Questão
True or False - This ray diagram shows an object between F and 2F
Responda
- True
- False
Questão 6
Questão
True or False - This image shows a ray diagram of an object at 2F
Responda
- True
- False
Questão 7
Questão
What are the 3 properties of an image on a ray diagram?
Responda
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Magnification
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Direction
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Orientation
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Nature
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Shape
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Curvature
Questão 8
Questão
True or False - The image shows The Lens Formula
Responda
- True
- False
Questão 9
Questão
True or False - Converging lenses must have positive focal lengths, and diverging lenses must have negative focal lengths for the formula to work.
Responda
- True
- False
Questão 10
Questão
True or False - For the formula to work, distances to real images should be negative and those to virtual images should be positive
Responda
- True
- False
Questão 11
Questão
True or False - this diagram shows an Astronomical Telescope in normal adjustment
Responda
- True
- False
Questão 12
Questão
The units for the Small Angle Approximation are:
Responda
-
angle = radians height = centimetres distance = meters
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angle = radians height = metres distance = parsecs
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angle = radians height = metres distance = metres
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angle = degrees height = metres distance = metres
Questão 13
Questão
The formula for Angular Magnificatio = fe/f0
Responda
- True
- False
Questão 14
Questão
Select features which define a reflecting telescope
Responda
-
They use a spherical mirror
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They can suffer from spherical aberration
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They feature a principal axis
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They use the idea of angle of incidence = angle of refraction
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A parabolic mirror is used
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They suffer from chromatic aberration
Questão 15
Questão
What are the differences and similarities between reflecting telescopes and Cassegrain Telescopes?
Responda
-
They both use elliptical mirrors
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They both suffer from spherical aberration
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A reflecting telescope has only one mirror, while a cassegrain telescope has two - a primary mirror and a secondary mirror
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Both mirrors have holes in them
Questão 16
Questão
A Cassegrain reflector uses a secondary mirror to direct light rays reflected by the primary mirror through a hole in the primary mirror towards the observer
Responda
- True
- False
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