one wordd questions Flashcards
What is refraction?
Refraction is the bending of light as it passes from one medium to another.
True or False: Light travels faster in water than in air.
False
Fill in the blank: The angle of incidence is equal to the angle of _____.
refraction
What causes the bending of light during refraction?
The change in speed of light as it moves between different media.
What is the formula for calculating the refractive index?
Refractive index = Speed of light in vacuum / Speed of light in medium
Which of the following materials has the highest refractive index? a) Air b) Water c) Glass d) Diamond
d) Diamond
What is dispersion of light?
Dispersion of light is the separation of light into its constituent colors.
True or False: A prism can be used to demonstrate dispersion of light.
True
List the colors of the visible spectrum in order.
Red, Orange, Yellow, Green, Blue, Indigo, Violet
What phenomenon occurs when light passes through a prism?
Dispersion
Fill in the blank: The bending of light at the boundary of two different media is known as _____.
refraction
What is total internal reflection?
Total internal reflection is the complete reflection of light back into a medium when it hits the boundary at an angle greater than the critical angle.
True or False: The critical angle is the angle of incidence that results in refraction.
False
What is the critical angle?
The critical angle is the angle of incidence above which total internal reflection occurs.
Which color of light bends the least when passing through a prism?
Red
What is the effect of increasing the angle of incidence on refraction?
Increasing the angle of incidence generally increases the angle of refraction, until the critical angle is reached.
Name a common use of refraction in everyday life.
Eyeglasses and cameras use refraction to focus light.
What happens to light when it enters a denser medium?
It slows down and bends towards the normal line.
What is the visible spectrum?
The visible spectrum is the range of wavelengths of light that can be seen by the human eye.
Fill in the blank: The bending of light away from the normal occurs when light moves from a ____ medium to a ____ medium.
denser; rarer
