Mediums of Light

Q.

How can you convert a transparent glass sheet into a translucent glass sheet?

1. By painting it

2. By scratching it with iron rod

3. Both A & B

4. By covering one side with butter paper.

Q.

Which of the following object is/are not opaque?

1. Air

2. Water

3. Mirror

4. Lens

Q. Which of the following is a translucent object?

1. 
   Butter paper
2. 
   Glass
3. 
   Air
4. 
   Wood

Q. Frosted glass is an example of a/an _________ object.

1. transparent
2. opaque
3. translucent
4. both opaque and translucent

Q.

Vacuum is an opaque medium.

1. True
2. False

Q.

Which is an opaque body?

1. muddy water

2. clear glass

3. diamond

4. stone

Q. Fill in the blank:
A medium which allows light to pass through it easily is called the ______.

Q.

Deep seawater is a transparent medium.

1. True
2. False

Q.

True or False

a) Reflection is responsible for the formation of a shadow

Q.

If we can see only partially through an object, then such an object is called

1. Translucent

2. Transparent

3. Opaque

4. Luminous

Q.

Which of the following is not a transparent medium?

1. Air

2. Vacuum

3. A thick colored glass window

4. Water

Q. Write true or false :

Light passes through glass.

Q.

Classify the following objects as transparent, ​translucent or opaque.​

Q.

The best way to observe a solar eclipse is to ___ .

1. All of these

2. Using Pinhole camera

3. Using reflection on the water in a tub

4. Using Periscope or Mirror

Q.

Which is not a translucent body?

1. butter paper

2. ground glass

3. water

4. dust filled air

Q. Explain the difference between a transparent, translucent and an opaque medium. Give two examples of each.​

Q.

Define a transparent medium with four examples:

Q.

Study the classification table below. How have the objects been classified?

X	Y
ruler	sun
book	firefly
watch	star
diamond	fire

1. X	Y
   Objects that reflect light	Objects that give out their own light

2. X	Y
   Opaque objects	Transparent objects

3. X	Y
   Objects that have shadows	Objects that do not have shadows

4. X	Y
   Objects that produce light	Objects that produce heat and light

Q.

The best way to observe a solar eclipse is

1. All of these

2. Using Pinhole camera

3. Using reflection on the water in a tub

4. Using Periscope or Mirror

Q. Transparent objects:

1. Allow light to pass to produce shadow.
2. Allow some amount of light to pass through them.
3. Allow light to pass through them.
   
4. Do allow the light to pass through them.

Q. Which of the following is true about mirrors?

1. It can cast a shadow.
2. It reflects light.
3. It forms a clear image.
4. All of the above.

Q.

Choose the most appropriate pair.

1. Transparent - Trees

2. Translucent - Smoke

3. Transparent - Human Body

4. Luminous - Fog

Q. Identify the translucent slab in the given picture:

1. 
2. 
3. 

Q.

Which object does not allow light to pass through it?

1. Transparent

2. Opaque

3. Translucent

4. None of these

Q. Which object doesn't allow light to pass through them?

1. Glass
2. Water
3. Bulb
4. Wood

Q.

How can you convert a transparent glass sheet into a translucent glass sheet?

1. By painting it

2. By scratching it with iron rod

3. Both A & B

4. By covering one side with butter paper.

Q.

Define the following ter and support your answer with two examples: transparent medium

Q.

How can you convert a transparent glass sheet into a translucent glass sheet?

1. By painting it

2. By scratching it with iron rod

3. Both A & B

4. By covering one side with butter paper.

Q.

Which type of material allows light to pass through it completely?

1. Opaque

2. None of these

3. Translucent

4. Transparent