Light Reflection and Refraction Test

Result

Light Reflection and Refraction Test - 29

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Whenever light travels from denser medium to a rarer medium:

A
it bends away from the normal

B
it bends towards the normal

C
it passes undeviated

D
it always reflects back

Solution

Whenever light travels from a denser medium to a rarer medium, it bends away from the normal due to refraction.
Question 2
1 / -0

In reflection, light travels through:

A
only one medium

B
two media

C
three media

D
more than three media

Solution

Reflection of light is the process where the incident light on a surface is bounced back into the same medium. In reflection, the light gets reflected from the surface of second medium. Hence,here light travels only in one medium.
Question 3
1 / -0

The angle between the incident ray and the reflecting surface is known as:

A
glancing angle of incidence

B
angle of incidence

C
glancing angle of reflection

D
angle of reflection

Solution

According to the definition, the angle between the incident ray and the reflecting surface is known as glancing angle of incidence. Sum of glancing angle of incidence and the angle of incidence is $$90^0$$.
Question 4
1 / -0

Angle which the normal ray makes with the mirror is equal to:

A
$$\displaystyle { 30 }^{ \circ}$$

B
$$\displaystyle { 45 }^{ \circ }$$

C
$$\displaystyle { 90 }^{ \circ }$$

D
$$\displaystyle { 180 }^{ \circ }$$

Solution

The perpendicular drawn to the surface of the mirror at the point of incidence is known as a normal ray. So, the angle made by the ray with the mirror is equal to $$\displaystyle { 90 }^{ \circ }$$.
Question 5
1 / -0

The ray which bounces off the surface of the mirror when the incident ray strikes the mirror is known as ________. The point at which incident ray meets the mirror is called the _________.

A
normal ray, point of reflection

B
reflected ray, point of refraction

C
reflected ray, point of incidence

D
diffracted ray, point of diffraction

Solution

According to definition of reflected ray and point of incidence, the ray which bounces off the surface of the mirror when the incident ray strikes the mirror is known as the reflected ray. The point at which incident ray meets the mirror is called the point of incidence.
Question 6
1 / -0

Fill in the blanks:
The area of concave mirror that is exposed to incident light is called ________.

A
aperture

B
centre of curvature

C
focus

D
focal length

Solution

The area of a lens or mirror exposed to incident light is known as aperture.
Question 7
1 / -0

Fill in the blanks:
An image that cannot be obtained on a screen is called _________.

A
real

B
virtual

C
plane

D
none

Solution

Virtual images cannot be obtained on a screen as they are not formed by actual intersection of light rays. Virtual images are formed when light rays appear to be diverging from a point.
Question 8
1 / -0

Concave lenses are also known as

A
Converging lenses

B
Diverging lenses

C
Plane lenses

D
Circular lenses

Solution

$$Answer:-$$ B option
Concave lenses are thinner at the middle. Rays of light that pass through the lens are spread out (they diverge). A concave lens is a diverging lens.
Question 9
1 / -0

Which of the following is the main reason of Opacity of light waves.

A
Reflection

B
Absorption

C
Refraction

D
Diffusion

E
Transmission

Solution

Objects are visible to the eye when light strikes the surface and reflect back itself into the eye. Opaque objects show this phenomenon.
However, in the transparent objects, the incident light on their surface gets transmitted, hence does not reflect back to the eye and appear transparent.
Question 10
1 / -0

Different types of spherical mirrors are:

A
plane and curved

B
convex and concave

C
real mirrors

D
virtual mirrors
Solution
Spherical mirrors are of $$2$$ types:
A spherical mirror, whose reflecting surface is curved inwards is called a concave mirror.
A spherical mirror, whose reflecting surface is curved outwards, is called a convex mirror.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Light Reflection and Refraction Test - 29

Result

Light Reflection and Refraction Test - 29

Score

-

Rank

-

SHARING IS CARING

Question 1

it bends away from the normal

it bends towards the normal

it passes undeviated

it always reflects back

Solution

Question 2

only one medium

two media

three media

more than three media

Solution

Question 3

glancing angle of incidence

angle of incidence

glancing angle of reflection

angle of reflection

Solution

Question 4

$$\displaystyle { 30 }^{ \circ}$$

$$\displaystyle { 45 }^{ \circ }$$

$$\displaystyle { 90 }^{ \circ }$$

$$\displaystyle { 180 }^{ \circ }$$

Solution

Question 5

normal ray, point of reflection

reflected ray, point of refraction

reflected ray, point of incidence

diffracted ray, point of diffraction

Solution

Question 6

aperture

centre of curvature

focus

focal length

Solution

Question 7

real

virtual

plane

none

Solution

Question 8

Converging lenses

Diverging lenses

Plane lenses

Circular lenses

Solution

Question 9

Reflection

Absorption

Refraction

Diffusion

Transmission

Solution

Question 10

plane and curved

convex and concave

real mirrors

virtual mirrors

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.