Physics
Questions Bank Lenses and the Law of Refraction |
\[1 \star\]
One of the shapes in which light does not refract
Choose the correct answer
A
A
B
B
C
C
D
D
Click here to show the solution method
\[2 \star\]
In the adjacent figure, light fell from air to water as shown. If the angle of incidence is
\[𝜃=30^0\]
and the refractive index of the first medium is 1 and the refractive index of the second medium is 1.33, then the angle of refraction equals
Choose the correct answer
A
\[ 𝜃=18^0 \]
B
\[ 𝜃=16^0 \]
C
\[𝜃=22^0\]
D
\[𝜃=20^0\]
Click here to show the solution method
\[3 \star\]
Light fell from glass with a refractive index of 1.6 to air with a refractive index of 1 at different angles of incidence
One of the following answers represents a critical angle of incidence
Choose the correct answer
A
\[𝜃_C=40.7^0\]
B
\[𝜃_C=38.7^0\]
C
\[𝜃_C=52.7^0\]
D
\[𝜃_C=33.7^0\]
\[4 \star\]
In one of the following answers, light refracts approaching the normal if it falls non-perpendicularly on the interface surface between two media
Choose the correct answer
A
Light fell from glass to water
B
Light fell from water to air
C
Light fell from a medium where the speed of light is lower to a medium where the speed of light is higher
D
Light fell from a medium with a lower refractive index to a medium with a higher refractive index
Click here to show the solution method
\[5 \star\]
In one of the following answers, a critical angle can occur
Choose the correct answer
A
Light fell from water to air
B
Light fell from water to glass
C
Light fell from a medium with a lower refractive index to a medium with a higher refractive index
D
Light fell from a medium where the speed of light is higher to a medium where the speed of light is lower
Click here to show the solution method
\[6 \star\]
Light fell on an interface surface between two media and the critical angle was
\[ 𝜃_C= 42^0\] then one of the following angles of incidence
leads to total internal reflection
Choose the correct answer
A
\[ 𝜃=0.0^0\]
B
\[𝜃=37^0\]
C
\[𝜃=44^0\]
D
\[𝜃=42^0\]
Click here to show the solution method
\[7 \star\]
Light fell between two media and refracted away from the normal, then one of the following answers expresses the two media
Choose the correct answer
A
\[𝑣_1 >𝑣_2\]
B
\[𝑛_1 = 𝑛_2\]
C
\[𝑛_2 >𝑛_1\]
D
\[𝑛_1 >𝑛_2\]
Click here to show the solution method
\[8 \star\]
Light fell between two media from a medium with a lower refractive index
to a medium with a higher refractive index and refracted
approaching the normal, then one of the following answers expresses
the wavelength and frequency
Choose the correct answer
A
Wavelength decreases and frequency increases
B
Wavelength decreases, frequency constant
C
Wavelength and frequency constant
D
Wavelength increases and frequency decreases
Click here to show the solution method
\[9 \star\]
From natural phenomena that are not considered phenomena of light refraction
Choose the correct answer
A
Rainbow
B
Mirage
C
Aurora
D
Diamond sparkle
Click here to show the solution method
\[10 \star\]
A transparent body that refracts light rays and collects them to form the image
Choose the correct answer
A
Concave lens
B
Concave mirror
C
Convex lens
D
Convex mirror
Click here to show the solution method
\[11 \star\]
Light fell on a lens passing through the optical center as shown in the figure below, then it
Choose the correct answer
A
Refracts passing through double the focal length
B
Refracts parallel to the principal axis
C
Refracts passing through the focus
D
Does not refract and continues its path
Click here to show the solution method
\[12 \star\]
An object was placed in front of a convex lens. At which position
of the object does an image equal to the object appear?
Choose the correct answer
A
Between the focus and the lens
B
At the focus
C
At double the focal length
D
Between the focus and double the focal length
Click here to show the solution method
\[13 \star\star\]
A convex lens with a focal length of
\[20\;cm\] and an object placed at a distance of
\[50\;cm\] from the lens, then the image distance from the lens equals
Choose the correct answer
A
\[x_i = 70 \;\;cm\]
B
\[x_i = 39 \;\;cm\]
C
\[x_i = 33.3 \;\;cm\]
D
\[x_i = 45.4 \;\;cm\]
Click here to show the solution method
\[14 \star \star\star\]
An object was placed in front of a lens and an image appeared
and the ratio of the object length to the image length
equals
-2
Then the correct image characteristics
Choose the correct answer
A
( Magnified – Virtual – Upright )
B
( Magnified – Real – Inverted )
C
( Diminished – Virtual – Upright )
D
(Diminished - Real - Inverted)
Click here to show the solution method
\[15 \star \star\star\]
An object of length
\[h_o=10\;cm\] was placed in front of a lens at a distance of
\[20\;cm\] and an image of length
\[h_i=6\;cm\] upright appeared, then the type of lens
and its focal length equals
Choose the correct answer
A
\[f= -7.5 \;\;cm\]
Concave lens
B
\[f= 7.5 \;\;cm\]
Convex lens
C
\[f= -30\;\;cm\]
Concave lens
D
\[f= 30 \;\;cm\]
Convex lens
Click here to show the solution method
\[16 \star \star \star\]
In the table below, the refractive index for some materials
Yellow light fell from air whose refractive index is
equal to 1 to an unknown medium and refracted
as shown in the figure below. If
the angle of incidence
\[𝜃= 40^0\]
and the angle of refraction
\[𝜃= 25^0\]
then
the unknown medium is
Choose the correct answer
A
Water
B
Ethanol
C
Polished Glass
D
Quartz
Click here to show the solution method
\[17 \star\star\star\]
A convex lens with a focal length of
\[f=20 Cm \]
An object was placed in front of the lens and a magnified image appeared equal to
twice the size of the object and on the other end of the lens, then the object
was placed at a distance equal to from the lens
Choose the correct answer
A
\[x_O = 25 \;\;cm\]
B
\[x_O = 30 \;\;cm\]
C
\[x_O = 35 \;\;cm\]
D
\[x_O = 40 \;\;cm\]
Click here to show the solution method
\[18 \star\]
An object of length
\[4 cm\] is placed at a distance of
\[15 cm\]
from a convex lens with a focal length of
\[10 cm\]
What is the magnification of the image?
Choose the correct answer
A
\[⌊𝑚⌋=0.5\]
B
\[⌊𝑚⌋=1\]
C
\[⌊𝑚⌋=1.5\]
D
\[⌊𝑚⌋=2\]
Click here to show the solution method
\[19 \star\star\star\]
A convex lens with a focal length of
\[25 cm \] forms a real inverted image of an object. If the magnification is 0.5, what is the object distance from the lens?
Choose the correct answer
A
50 cm
B
75 cm
C
37.5 cm
D
25 cm
Click here to show the solution method
\[20\star\star\]
A light ray falls from water with a refractive index of
\[(n=1.33)\] to air
with a refractive index of
\[n=1\]
at an angle of incidence of \[50°\] What is the angle of refraction?
Choose the correct answer
A
80.5°
B
72.8°
C
65.2°
D
Does not refract (total internal reflection occurs)
Click here to show the solution method
\[21 \star\star\]
An object of length
\[3 cm \]
is placed at a distance of
\[ 40 cm \]
from a convex lens with a focal length of
\[ 30 cm\]
. What is the length of the formed image?
Choose the correct answer
A
4.5 cm
B
6 cm
C
9cm
D
12 cm
Click here to show the solution method
Answer the following questions
\[1\star \]
Light fell from water in which the speed of light is
2.25 × 108m/s
at an angle of incidence of 28 degrees
to glass in which the speed of light is
1.81 × 108m/s
Complete the path of the light ray in the glass
Calculate the refractive index of water and the refractive index of glass
given that the speed of light in vacuum is
\[C=3×10^8\;\;m/s\]
\[.........................................\;\;\;\;\;\;....................................\]
\[........................................\;\;\;\;\;\;....................................\]
\[.........................................\;\;\;\;\;\;....................................\]
\[........................................\;\;\;\;\;\;....................................\]
Calculate the angle of refraction of light using Snell's law
\[.........................................\;\;\;\;\;\;....................................\]
\[........................................\;\;\;\;\;\;....................................\]
\[.........................................\;\;\;\;\;\;....................................\]
\[........................................\;\;\;\;\;\;....................................\]
Click here to show the solution method
\[2\star\]
A convex lens with a focal length of 10 cm. Write on the figure the data expressing each space indicated by an arrow
Draw on the figure through the refracted rays the location of the image
and write the image characteristics
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
At which position do we place the object so that an image equal to the object appears?
\[..........................................\;\;\;\;\;\;........................................\]
At which position do we place the object so that no image appears? Explain the reason.
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
Click here to show the solution method
\[3\star\]
A light ray falls at an angle of
\[60\] on the surface of a prism with an apex angle of
\[45°\] If the refractive index of the prism material is 1.6, and the refractive index of air is 1, calculate the exit angle from the prism
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
Click here to show the solution method
\[4\star\]
An object of height
\[ 4 cm\] is placed on the principal axis of a concave lens with a focal length of
\[10 cm\] at a distance of
\[15 cm\] from its optical center.
Find the distance of the image from the lens
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
Calculate the magnification of the image and write its characteristics
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
Calculate the height of the image
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
Draw the location of image formation
on the figure
Click here to show the solution method
🧮 Calculator
🗑️
✏️ قلم
One of the shapes in which light does not refract
Choose the correct answer
Click here to show the solution method
In the adjacent figure, light fell from air to water as shown. If the angle of incidence is
\[𝜃=30^0\]
and the refractive index of the first medium is 1 and the refractive index of the second medium is 1.33, then the angle of refraction equals
Choose the correct answer
Click here to show the solution method
Light fell from glass with a refractive index of 1.6 to air with a refractive index of 1 at different angles of incidence
One of the following answers represents a critical angle of incidence
Choose the correct answer
In one of the following answers, light refracts approaching the normal if it falls non-perpendicularly on the interface surface between two media
Choose the correct answer
Click here to show the solution method
In one of the following answers, a critical angle can occur
Choose the correct answer
Click here to show the solution method
Light fell on an interface surface between two media and the critical angle was \[ 𝜃_C= 42^0\] then one of the following angles of incidence leads to total internal reflection
Choose the correct answer
Click here to show the solution method
Light fell between two media and refracted away from the normal, then one of the following answers expresses the two media
Choose the correct answer
Click here to show the solution method
Light fell between two media from a medium with a lower refractive index to a medium with a higher refractive index and refracted approaching the normal, then one of the following answers expresses the wavelength and frequency
Choose the correct answer
Click here to show the solution method
From natural phenomena that are not considered phenomena of light refraction
Choose the correct answer
Click here to show the solution method
A transparent body that refracts light rays and collects them to form the image
Choose the correct answer
Click here to show the solution method
Light fell on a lens passing through the optical center as shown in the figure below, then it
Choose the correct answer
Click here to show the solution method
An object was placed in front of a convex lens. At which position of the object does an image equal to the object appear?
Choose the correct answer
Click here to show the solution method
A convex lens with a focal length of \[20\;cm\] and an object placed at a distance of \[50\;cm\] from the lens, then the image distance from the lens equals
Choose the correct answer
Click here to show the solution method
An object was placed in front of a lens and an image appeared
and the ratio of the object length to the image length
equals
-2
Then the correct image characteristics
Choose the correct answer
Click here to show the solution method
An object of length \[h_o=10\;cm\] was placed in front of a lens at a distance of \[20\;cm\] and an image of length \[h_i=6\;cm\] upright appeared, then the type of lens and its focal length equals
Choose the correct answer
Concave lens
Convex lens
Concave lens
Convex lens
Click here to show the solution method
In the table below, the refractive index for some materials
Yellow light fell from air whose refractive index is
equal to 1 to an unknown medium and refracted
as shown in the figure below. If
the angle of incidence
\[𝜃= 40^0\]
and the angle of refraction
\[𝜃= 25^0\]
then
the unknown medium is
Choose the correct answer
Click here to show the solution method
A convex lens with a focal length of
\[f=20 Cm \]
An object was placed in front of the lens and a magnified image appeared equal to
twice the size of the object and on the other end of the lens, then the object
was placed at a distance equal to from the lens
Choose the correct answer
Click here to show the solution method
An object of length \[4 cm\] is placed at a distance of \[15 cm\] from a convex lens with a focal length of \[10 cm\] What is the magnification of the image?
Choose the correct answer
Click here to show the solution method
A convex lens with a focal length of \[25 cm \] forms a real inverted image of an object. If the magnification is 0.5, what is the object distance from the lens?
Choose the correct answer
Click here to show the solution method
A light ray falls from water with a refractive index of \[(n=1.33)\] to air with a refractive index of \[n=1\] at an angle of incidence of \[50°\] What is the angle of refraction?
Choose the correct answer
Click here to show the solution method
An object of length \[3 cm \] is placed at a distance of \[ 40 cm \] from a convex lens with a focal length of \[ 30 cm\] . What is the length of the formed image?
Choose the correct answer
Click here to show the solution method
Answer the following questions
Light fell from water in which the speed of light is
A convex lens with a focal length of 10 cm. Write on the figure the data expressing each space indicated by an arrow
A light ray falls at an angle of
\[60\] on the surface of a prism with an apex angle of
\[45°\] If the refractive index of the prism material is 1.6, and the refractive index of air is 1, calculate the exit angle from the prism
An object of height
\[ 4 cm\] is placed on the principal axis of a concave lens with a focal length of
\[10 cm\] at a distance of
\[15 cm\] from its optical center.
2.25 × 108m/s
at an angle of incidence of 28 degrees
to glass in which the speed of light is
1.81 × 108m/s
Complete the path of the light ray in the glass
Calculate the refractive index of water and the refractive index of glass
given that the speed of light in vacuum is
\[C=3×10^8\;\;m/s\]
\[.........................................\;\;\;\;\;\;....................................\]
\[........................................\;\;\;\;\;\;....................................\]
\[.........................................\;\;\;\;\;\;....................................\]
\[........................................\;\;\;\;\;\;....................................\]
Calculate the angle of refraction of light using Snell's law
\[.........................................\;\;\;\;\;\;....................................\]
\[........................................\;\;\;\;\;\;....................................\]
\[.........................................\;\;\;\;\;\;....................................\]
\[........................................\;\;\;\;\;\;....................................\]
Click here to show the solution method
Draw on the figure through the refracted rays the location of the image
and write the image characteristics
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
At which position do we place the object so that an image equal to the object appears?
\[..........................................\;\;\;\;\;\;........................................\]
At which position do we place the object so that no image appears? Explain the reason.
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
Click here to show the solution method
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
Click here to show the solution method
Find the distance of the image from the lens
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
Calculate the magnification of the image and write its characteristics
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
Calculate the height of the image
\[..........................................\;\;\;\;\;\;........................................\]
\[..........................................\;\;\;\;\;\;........................................\]
Draw the location of image formation
on the figure
Click here to show the solution method
No comments:
Post a Comment