Light Test

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Light Test - 25

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Weekly Quiz Competition

Question 1
1 / -0

Some special kaleidoscopes which doesn't include objects at all are known as:

A
Teleidoscopes

B
Telescopes

C
Spy glass

D
None of above

Solution

Teleidoscope is a type of kaleidoscope with a lens which create patterns without any other objects in the tube.
Question 2
1 / -0

What should we do if dust particles go into our eyes while playing in the ground?

A
Wash your eyes with chlorine water

B
Wash your eyes with clean water

C
Wash your eyes with salt water

D
Wash your eyes with dettol

Solution

The eye is a very sensitive organ and irritants such as dust and smoke have both a short term and long-term effect. Short-term effects include itchiness, tearfulness, soreness and red eyes.
Frequent washing of eyes with normal clean water helps to clean these dust particles.
So always wash eyes with clean water.
Question 3
1 / -0

In kaleidoscope the part containing objects to be viewed is known as :

A
Object Chamber

B
Object House

C
Object Lobby

D
None of the above

Solution

All objects are loosely placed on the other ends of the Kaleidoscope which is known as the Object chamber.
Question 4
1 / -0

What can injure retina of the eye from below given objects?

A
Bright light source

B
Powerful lamp

C
Laser torch

D
All of the above

Solution

All the above options mentioned has very high intensity bright light which can damage the retina of the eyes.A bright light source and a powerful lamp and laser torch has concentrated light of high intensity which when falls directly on retina of eye can damage the retina .
Question 5
1 / -0

At what angle the rectangular mirrors are set to each other in Kaleidoscope?

A
90 degrees

B
30 degrees

C
60 degrees

D
120 degrees

Solution
Question 6
1 / -0

We should wash our eyes with clean water between what intervals?

A
Daily

B
Frequently

C
Monthly

D
Weekly

Solution

We have to make sure that we are washing and cleaning our eyes frequently to keep them free from dirt and dust particles which may irritate our eye balls and also it helps to keep them cool and calm.
Question 7
1 / -0

When does the tumbling of coloured objects presents varying colours and patterns in kaleidoscope?

A
When kaleidoscope tube is stood erect

B
When kaleidoscope tube is tilted

C
When kaleidoscope tube is rotated

D
When kaleidoscope tube is inverted

Solution

Beautiful patterns are formed in a kaleidoscope because of multiple reflections. When the kaleidoscope tube is rotated then it forms different varying patterns and colors.
Question 8
1 / -0

Which vitamin rich food items should we eat to keep our eyes healthy?

A
Vitamin D

B
Vitamin A

C
Vitamin E

D
Vitamin C

Solution

Vitamin A is good for eyesight.
Question 9
1 / -0

Which of the following foods are rich in Vitamin A?

A
Carrot

B
Cauliflower

C
Green Chillies

D
Beans

Solution

Carrot is a rich source of Vitamin A.
Question 10
1 / -0

What are braille characters?

A
Small triangular blocks that contains raised dots

B
Small rectangular blocks that contains raised dots

C
Small triangular blocks that contains suppressed dots

D
Small square blocks that contains raised dots

Solution

Braille is a tactile writing system used by people who are visually impaired. It is traditionally written with embossed paper.
Braille characters are rectangular in shape with raised dots which helps person to identify the characters by touching characters.

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Re-Attempt Weekly Quiz Competition

Light Test - 25

Result

Light Test - 25

Score

-

Rank

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SHARING IS CARING

Question 1

Teleidoscopes

Telescopes

Spy glass

None of above

Solution

Question 2

Wash your eyes with chlorine water

Wash your eyes with clean water

Wash your eyes with salt water

Wash your eyes with dettol

Solution

Question 3

Object Chamber

Object House

Object Lobby

None of the above

Solution

Question 4

Bright light source

Powerful lamp

Laser torch

All of the above

Solution

Question 5

90 degrees

30 degrees

60 degrees

120 degrees

Solution

Question 6

Daily

Frequently

Monthly

Weekly

Solution

Question 7

When kaleidoscope tube is stood erect

When kaleidoscope tube is tilted

When kaleidoscope tube is rotated

When kaleidoscope tube is inverted

Solution

Question 8

Vitamin D

Vitamin A

Vitamin E

Vitamin C

Solution

Question 9

Carrot

Cauliflower

Green Chillies

Beans

Solution

Question 10

Small triangular blocks that contains raised dots

Small rectangular blocks that contains raised dots

Small triangular blocks that contains suppressed dots

Small square blocks that contains raised dots

Solution

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