Light Test

Result

Light Test - 3

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 region where light is totally or partially cut off by an opaque body is called

A
reflection

B
shadow

C
refraction

D
None of these
Question 2
1 / -0

Which of the following statements is incorrect?

A
White light consists of seven colours.

B
A tube light is a cold source of light.

C
The moon is a cold luminous mirror.

D
Glass is a transparent medium.
Question 3
1 / -0

Light is called a

A
mechanical wave as it requires a medium for its propagation

B
mechanical wave as it does not require a medium for its propagation

C
non-mechanical wave as it requires a medium for its propagation

D
non-mechanical wave as it does not require a medium for its propagation
Question 4
1 / -0

Rajan moves towards a plane mirror with a speed of 8 m/s. Then, he sees his image to be moving towards him with a speed of

A
4 m/s

B
8 m/s

C
16 m/s

D
32 m/s
Question 5
1 / -0

In the case of a concave mirror, the image coincides with the object when the object is placed at

A
infinity

B
focus

C
centre of curvature

D
any point
Question 6
1 / -0

Which of the following is the relation between focal length (f) and radius of curvature (R)?

A
R = f/2

B
R = 2f

C
R = f

D
None of these
Question 7
1 / -0

What is the nature of the image formed in a periscope?

A
Real with lateral inversion

B
Real without lateral inversion

C
Virtual without lateral inversion

D
Virtual with lateral inversion

Solution

A periscope consists of two plane mirrors. The image formed in one mirror behaves as the object for the second mirror, so the image gets laterally inverted twice, and the image is formed behind the mirror. So, the final image formed is virtual without lateral inversion.
Question 8
1 / -0

If the velocity of light in vacuum is 3 × 10⁸ m/s, find the refractive index of water.
(Take velocity of light in water = 2.26 ×10⁸ m/s)

A
1.33

B
0.75

C
6.78

D
None of these
Question 9
1 / -0

On which of the following factors does the deviation produced by an equilateral prism not depend?

A
Angle of incidence

B
Material of the prism

C
Size of the prism

D
Angle of refraction

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Light Test - 3

Result

Light Test - 3

Score

-

Rank

-

SHARING IS CARING

Question 1

reflection

shadow

refraction

None of these

Question 2

White light consists of seven colours.

A tube light is a cold source of light.

The moon is a cold luminous mirror.

Glass is a transparent medium.

Question 3

mechanical wave as it requires a medium for its propagation

mechanical wave as it does not require a medium for its propagation

non-mechanical wave as it requires a medium for its propagation

non-mechanical wave as it does not require a medium for its propagation

Question 4

4 m/s

8 m/s

16 m/s

32 m/s

Question 5

infinity

focus

centre of curvature

any point

Question 6

R = f/2

R = 2f

R = f

None of these

Question 7

Real with lateral inversion

Real without lateral inversion

Virtual without lateral inversion

Virtual with lateral inversion

Solution

Question 8

1.33

0.75

6.78

None of these

Question 9

Angle of incidence

Material of the prism

Size of the prism

Angle of refraction

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.