Light Reflection and Refraction Test

Result

Light Reflection and Refraction Test - 28

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

The image formed by a plane mirror is -

A
virtual

B
inverted

C
diminished

D
magnified

Solution

A plane mirror always forms an image which is virtual in nature (meaning that light rays meet behind the mirror or that light rays do not actually come from the image), erect and of the same shape and size as that of the object it is reflecting.
Hence, the correct answer is OPTION A.
Question 2
1 / -0

A perpendicular drawn at the point of incidence of a light ray on the surface of a mirror is called -

A
incident ray

B
reflected ray

C
normal

D
none of these

Solution

Normal is perpendicular drawn to the surface at the point of incidence so that angle between incident ray and normal is angle of incidence.
Question 3
1 / -0

.......... occurs when a light ray bounces back from a barrier.

A
Refraction

B
Reflection

C
Dispersion

D
Scattering

Solution

Reflection occurs when a light ray bounces back from a barrier.
Question 4
1 / -0

A ray of light which bounces off the surface of mirror is called :

A
Normal

B
Incident ray

C
Reflected ray

D
Irregular ray

Solution

A ray of light which bounces off the surface of mirror is called reflected ray.
Question 5
1 / -0

The phenomenon of light bending due to change of medium is called:

A
Reflection

B
Refraction

C
Dispersion

D
Total internal reflection

Solution

When light enters from one medium to another, its speed and direction changes, and hence the light seems to be bending towards or away from the normal. This phenomenon is called refraction of light.
Question 6
1 / -0

Fill in the blanks to complete the following sentences:

i) A ray travelling towards the mirror is the _________.
ii) Angle between reflected ray and normal is the _________.
iii) The angle between reflecting surface and the reflected ray is the _________.

A
i-incident ray ,ii-angle of reflection ,iii-glancing angle of reflection

B
i-normal ray ,ii-glancing angle of reflection ,iii-angle of incidence

C
i-reflected ray ,ii glancing angle of incidence ,iii-glancing angle of reflection

D
i-reflected ray ,ii-angle of incidence ,iii- angle of reflection

Solution

According to definition,
i) A ray from the object, travelling towards the mirror is the incident ray.
ii) Angle between reflected ray and normal is the angle of reflection.
iii) The angle between reflecting surface and the reflected ray is known as the glancing angle of reflection.
Question 7
1 / -0

The angle of incidence in a glass slab is ______ the angle of emergence.

A
Equal to

B
Smaller than

C
Greater than

D
Dependent on

Solution

The angle of incidence is always equal to the angle of emergence in a glass slab ($$i=e$$).
Question 8
1 / -0

Bouncing of light into the same medium, from which the light ray is incident, is termed as :

A
refraction

B
dispersion

C
reflection

D
scattering

Solution

Reflection is the bouncing back of light in the same medium (as of the incident ray) by any surface.
Question 9
1 / -0

When a beam of light from an object actually meets at a point after reflection from a mirror then the image formed is known as:

A
either real or virtual image

B
real image

C
virtual image

D
neither real nor virtual image

Solution

According to definition,when a beam of light from an object meets actually at a point after reflection from a mirror then the image formed is real. Real images can be obtained on a screen.
Question 10
1 / -0

Reflection can occur on

A
Transparent surfaces

B
Translucent surfaces

C
Opaque surfaces

D
All of the above

Solution

When light rays strike the surface of a material, there are two possible things that may be possible.
i) Apart from the part that is absorbed, most of the light rays are reflected completely and no light ray passes through the material. This happens when the material is opaque.
ii) The light rays are partially reflected, partially refracted, and partially absorbed when the material is translucent and transparent.
Therefore, reflection occurs whenever the light rays strike a surface, be it transparent, translucent or opaque.