Font size
WorksheetsREFRACTION OF LIGHT
Total questions: 20
Worksheet time: 12mins
Name the subjective property of light related to its wavelength.
refractive index
frequency
colour
velocity
Jyothi puts a pencil into a glass container having water and is surprised to see the pencil bend.Name the phenomenon responsible for the change.
Reflection of light
Refraction of light
total internal reflection of light
partial reflection and partial refraction
As the ray of light passes from air to glass, state how the wavelength of light changes.
wavelength increases
wavelength decreases
wavelength remains constant
wavelength decreases and then increases
A boy uses blue colour of light to find the refractive index of glass. He then repeats the experiment using red colour of light .How will the refractive index of glass be ?
the same
μ decreases
μ increases
same as speed of light
When a ray of light enters from one medium to another having different optical densities it bends. beacuse
of different optical densities
speed of light changes
obstruction of light changes
frequency of light changes
choose the conditions where light does not bend when entering a medium of different optical density,
incident ray is normal to the refracting surface
any obliquely incident ray
angle of incidence is 90°
angle of incidence is 0°
Which colour of light travels fastest in any medium except air ?
yellow
red
violet
white
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45
What happens to the light rays in a convex lens?
Converge
Diverge
Surge
Reflect
In a lens diagram, what does "u" mean?
Object distance
Image distance
Focal Point
Focal Length
Looking at the diagram, describe the object distance.
u>2f
u=2f
u=f
f<u<2f
This happens when the eyeballs are too long or the eye lenses are too thick
Hypermetropia
Myopia
Utopia
Hyperion
A ____ is formed when the sky is refracted on the road during hot sunny weather.
Rainbow
Halo
Mirage
Green flash
As a hunter you see a fish in a river. Where should you aim your spear?
Exactly at the fish
Below the fish
Above the fish
Nevermind, you will miss anyway.
What happens to the light when it travels from less dense to more dense medium?
speed up
slows down
breaks
parks
