Worksheetsrefraction of light
Total questions: 15
Worksheet time: 9mins
Name the factors that affect the lateral displacement of light as it passes through a rectangular glass slab.
thickness of block
angle of incidence
refractive index of glass
wavelenght of light
The speed of light in glass is 2 × 105 km/s. What is the refractive index of glass?
2 / 3
1.5
3 / 2
Name the subjective property of light related to its wavelength.
refractive index
frequency
colour
velocity
Jatin 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
A monochromatic beam of light of wavelength λ passes from air into a glass block. choose the correct relation.
v = c / λ
v = λ / λ'
μ = c / v
λ / λ' = μ
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
Relation between wavelength and refractive index.
μviolet > μred
μviolet < μred
μviolet = μred
μ has no relation with λ
what is the dependence of angle of deviation on the refractive index of the material of the prism ?
δ directly proportional to μ
δ inversly proportional to μ
δ equal to μ
δ has no relation to μ
What is the dependence of angle of deviation on the wavelength of light ?
δ is directly proportional to λ
δ is inversly proportional to λ
δ is equall to λ
δ is not relatedto λ
what is the relationship between angle of incidence and angle of refraction for a given pair of media ?
δ + A = i1 + i2
δ = (i1 + i2) - (r1 + r2)
μ = sin i / sin r
μ = c / v
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
Light passes through a rectangular glass slab and through a triangular glass prism.In what way does the direction of the two emergent beams differ and why ?
emergent beam from slab is parallel to incident beam, because the sides of the glass slab are parallel
emergent beam is not parallelto incident beam for a triangular prism because the refracting sidesof prism are inclined
incident beam and emergent beam are inclined towards the base of the prism , since the sides of the prism are inclined.
there is no change in the emergent beam from glass slab and glass prism
