NEW
Font size
WorksheetsRefraction of Light - Grade 10
Total questions: 20
Worksheet time: 16mins
What do you call the bending of light as it passes from one medium to another?
Reflection
Dispersion
Refraction
Rotatiom
A student placed a pencil in a cup of water. The pencil appears broken because light-
always travels in a straight line
bends when it passes through water
makes the water in the glass evaporate
reflects the pencil on the water's surface
Eye glasses use ______ for vision correction.
reflection
refraction
Light passes into a glass block. Which is the angle of refraction?
A
B
C
D
The refractive index of any medium is always _______.
less than 1
greater than 1
1
0
The unit of the index of refraction of a medium is _______.
m/s
m
s
"n" has no unit
If light travels through a piece of glass at 2.1 x 108 m/s, what is the index of refraction of the glass?
1.14
1.43
2.10
6.3
When light passes at an angle to the normal from one material into another material in which its speed is higher
it is bent toward the normal.
it always lies along the normal.
it is unaffected.
it is bent away from the normal.
When light passes at an angle to the normal from one material into another material in which its speed is lower
it is bent towards the normal.
it always lies along the normal.
it is unaffected.
it is bent away from the normal.
In what medium does light travel the fastest?
vacuum
air
water
glass
Light has the lowest velocity in which medium?
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45
diamond
water
flint glass
barium glass
A ray of light in air is incident at an angle on one side of a rectangular glass block, as shown. Which ray diagram correctly describes the complete path of the ray of light?
(Hint: Determine if light bends towards or away from normal at each boundary)
What is the speed of light in a material that has an index of refraction of 1.88?
3.0 x 108 m/s
1.88 x 108 m/s
1.6 x 108 m/s
5.64 x 108 m/s
The time taken by the light to cross a glass of thickness 4 mm and refractive index 3, will be
4 x 10-11sec
16 x 10-11sec
8 x 10-11sec
24 x 10-11sec
Light travels from air (n = 1.00) into a glass block that has an index of refraction of 1.46. The incident ray of light hits the surface at angle of 30o. At what approximate angle will the light ray enter the glass?
use the rule: n1sin(i) = n2sin(r)
45o
19o
30o
20o
