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