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level: Level 1 of Refraction

Questions and Answers List

level questions: Level 1 of Refraction

Question	Answer
Absolute refractive index of Polycarbonate	1.59
Absolute refractive index of oil	1.51
Absolute refractive index of vacuum	1.000
Absolute refractive index of air	1.000277
Absolute refractive index of water	1.33
Absolute refractive index of glass	1.5
Absolute refractive index of diamond	2.417
Absolute refractive index of ice	1.31
Absolute refractive index of acetone	1.36
Absolute refractive index of ethyl alcohol	1.36
Absolute refractive index of CR 39	1.498
Absolute refractive index of flint glass	1.56-1.75
Absolute refractive index of crown glass	1.523
The bending of light when it travels from one medium to another	Refraction of light
The medium where the light is incident	Incident medium
The medium where refraction occurs	Refractive medium
In refraction, the light must strike the surface _____	Obliquely
The boundary between two optical media	Interface
The light ray that is directed towards the surface	Incident ray
It is the point where the incident ray hits the surface	Point of incidence
It pass through the point of incident and is perpendicular to the interface	normal to the surface
The incident ray formed an angle with the normal to the surface and it is called ____	Angle of incidence
It is the light ray that leaves the surface and can be bent away or towards the surface	Refracted ray
The refracted ray formed an angle with the normal to the surface and it is called ____	Angle of refraction
The ratio of the velocity of light in vacuum to the velocity of light in another medium	Index of refraction
The refractive index of a medium with respect to vacuum	Absolute refractive index
The ration of the velocity of light in vacuum to the velocity of light in another medium	Absolute refractive index
It can be used to determine which is rarer medium and which is denser medium	Absolute refractive index
The medium with lower refractive index	Rarer medium
The rare the medium is, the ____ is the speed of light in that medium	faster
The medium with higher refractive index	Denser medium
The denser the medium is, the _____ is the speed of light in that medium	slower
The bending of light known as refraction is caused by ___	the change in the speed of light upon reaching another medium
The ratio of the velocity in the first medium to the velocity of light in the second medium	Relative refractive index
The ration of the absolute refractive index of the 2nd medium to that of the 1st medium	Relative refractive index
The basic features of refraction are easily derived from _____	Snell's law
Which law states that the incident ray and the refracted ray lie in one plane at the point of incidence but on the opposite sides of the normal to the surface?	1st law
Which law states that a constant ratio exists between the sines of the angles of incidence and refraction?	2nd Law or the Snell's law
Which law states that A ray of light passing obliquely from a rarer medium to a denser medium is bent towards the normal to the surface?	3rd Law
In which direction does the ray of light bend after passing obliquely from a rarer medium to a denser medium?	Towards the normal to the surface
When light travels from rare to denser medium, its speed will ___	Decrease
In 3rd law of refraction, the angle of incidence is ___ than the angle of refraction	Greater
Which law states that a ray of light passing obliquely from a denser medium to a rarer medium is bent away from the normal to the surface?	4th Law
In which direction does the ray of light bend after passing obliquely from a denser medium to a rarer medium?	Away from the normal to the surface
When light travels from a denser medium to a rarer medium, the speed will____	Increase
In 4th law of refraction, the angle of refraction is ____ than the angle of incident	Greater
Which law states that a ray of light striking the surface perpendicularly or normally is undeviated?	5th Law
An optical medium with parallel, sided interfaces	Plane Refractor
Rectangular glass block and aquarium are an example of ____	Plane refractor
The sideway displacement of light ray after passing through a plane refractor	Lateral displacement
It is the distance by which the object is apparently moved towards or away from the interface when the object being viewed is located in another medium	Apparent or linear displacement
The transmission of light across a boundary between two media is accompanied by a change in____	both the speed and wavelength of the wave
It is observed when the light wave changes speed and approaches the boundary at an angle	Refraction
An angle of incidence at denser medium that yields and angle of refraction of 90 degrees at the rarer medium	Critical angle
It occurs when a ray of light is incident on a surface separating an optically dense from a less optically dense medium at an angle of incidence that is considerably large	Total internal reflection
A phenomenon that occurs if the angle of incidence is greater than the critical angle	Total internal reflection
The green ray forms an angle of incidence ___ than the critical angle, the angle of refraction formed is _____	less than, less than 90 degress
The red ray forms a _____, the angle refraction is _____ and travels along the interface.	Critical angle, 90 degrees
The blue ray forms an angle of incidence ____ than the critical angle, no light is refracted out from the surface but instead, it is ______ internally.	Greater, reflected
an optical illusion wherein the reflection of light at layers of air of different temperatures formed an image	Mirage
Type of mirage seen over the land	Inferior mirage
Type of mirage occasionally seen over the sea	Superior mirage
Transmit data via fast-traveling pulses of light	Fiber optics
Technology of channeled light Transmission through hair – like strand pure glass known as	Optical fibers or light pipe
It is used by medical doctors to examine the internal orgns of the body	Edoscpoe
A device used in land and in sea warfare, submarine navigation, and elsewhere to enable an observer see his surroundings while remaining under cover, behind armor, or submerged in water.	Periscope
It uses two triangular prisms or mirrors to change direction of light by 90 degrees	Periscope
Used to bounce light towards oncoming cars, showing the way ahead	Reflecting roadstud