Worksheets10 P.S QUIZ 5 (REFRACTION AT PLANE SURFACE - 1)By PRABHAKAR
Total questions: 26
Worksheet time: 16mins
Light travels through a liquid at 2.25 x108 m/s. What is the refractive index of the liquid?
1.33
1.0
1.523
2.45
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45
A ray of light travels from air into a glass block.
Which diagram correctly shows the path of the ray through the glass block?
A
B
C
D
When light passes from one medium into another in which its speed is lower, then
it is bent towards the normal.
it always lies along the normal.
it is unaffected.
it is bent away from the normal.
How the charecteristics of light affected by an increase in the refractive index of the medium?
Its frequency increases
Its frequency decreases
Its speed increases
Its speed decreases
Which of the following factors change during the refraction of light ?
Frequency only
Wavelength only
Speed and frequency
Wavelength and speed
What happens to the speed and frequency of a light ray when it passes from air to water?
The speed decreases and the frequency increases
The speed decreases and the frequency remains the same
The speed increases and the frequency increases
The speed increases and the frequency remains the same
Light passes into a glass block. Which is the angle of refraction?
A
B
C
D
If the refractive index of a certain material is n = 2, the speed of light in that material is ________.
2 x 108 m/s
1.5 × 108 m/s
3.0× 108 m/s
6.0 × 108 m/s
When light passes from denser medium to rarer medium
it is bent toward the normal.
it always lies along the normal.
it is unaffected.
it is bent away from the normal.
For light to pass from medium (1) of index n1 to medium (2) of index n2 where n2 < n1, the angle of incidence must be ……………… than the refracted angle.
greater
smaller
equal
can't say
speed of light in vacuum/ Speed of light in medium =------------
Relative refractive index
Absolute refractive index
Optical density
Mass density
Units of refractive index
m/s
m/s2
No units
gr/cc
Refractive index depends on
Nature of the material
Wavelength of light used
Both nature and wavelength
None of the above
Which of the following characteristics is not altered during refraction of light
Speed
Frequency
Wavelength
None
Which of the following is snell's law
n1sini = n2sinr
Sini/sinr = v1/v2
Sini/sinr = n2/n1
All the above
from the given figure light travels from
Denser to rarer
Rarer to denser
denser to denser
rarer to rarer
From the given diagram which medium is denser medium
Medium 1
Medium 2
Bothe are denser
None of them are denser
In which medium from the figure speed of light is more
Medium 1
Medium 2
In both media is same
Can't say
The absolute refractive indices of water and glass are 4/3 and 3/2 respectively. then the relative refractive index of glass with respect to water is -----
9/8
8/9
3/4
2/3
If v1 and v2 are the velocities of light rarer and denser medium respectively, then the relation between v1 and v2?
v1= v2
v1 > v2
v1 < v2
can't say
∠i = ∠r
∠i > ∠r
∠i < ∠r
can't say
Absolute refractive index of any medium is always _______.
less than 1
greater than 1
1
0
