Transparent, opaque and translucent objects - class-VII

transparent, opaque and translucent objects

41 Questions Published

Questions

Question 1 Multiple Choice (Single Answer)

Transparent objects:

  1. do not let light pass through them
  2. allow light to pass through them
  3. absorb some amount of light and allow the remaining to pass through them
  4. reflect all the amount of light falling on them
Question 2 Multiple Choice (Single Answer)

Water is

  1. Transparent
  2. Translucent
  3. Opaque
  4. Polymer
Question 3 Multiple Choice (Single Answer)

Substances that allow light to pass through them are called

  1. Transparent
  2. Translucent
  3. Opaque
  4. None of these
Question 4 Multiple Choice (Single Answer)

Transparent objects.

  1. do not let light to pass through them
  2. allow light to pass through them
  3. absorb some amount of light and allow the remaining to pass through them
  4. reflect all the amount of light falling on them
Question 5 Multiple Choice (Single Answer)

A substance through which light can pass is called a/an :

  1. light body
  2. transparent body
  3. opaque body
  4. translucent body
Question 6 Multiple Choice (Single Answer)

Which of the following body allows only a part of the light to pass through it ?

  1. oiled paper
  2. brick
  3. wood
  4. air
Question 7 Multiple Choice (Single Answer)

A thin layer of water is transparent but a very thick layer of water is :

  1. translucent
  2. opaque
  3. most transparent
  4. completely transparent
Question 8 Multiple Choice (Single Answer)

Name the body which absorbs all colours.

  1. Black
  2. White
  3. Red
  4. Yellow
Question 9 Multiple Choice (Single Answer)

A body which allows most of the light to pass through it is called a :

  1. transparent body
  2. opaque body
  3. translucent body
  4. light medium
Question 10 Multiple Choice (Single Answer)

Which of the following is a $non-luminous$ body?

  1. Fire
  2. Sun
  3. Star
  4. Tree
Question 11 Multiple Choice (Single Answer)

A substance through which light can pass completely is called a/an

  1. transparent body
  2. translucent body
  3. opaque body
  4. None of the above
Question 12 Multiple Choice (Single Answer)

An object looks red when seen through a piece of red glass. What is the actual colour of the object ?

  1. Red
  2. White
  3. Red or green
  4. Black
Question 13 Multiple Choice (Single Answer)

Air is not visible because it :

  1. is a nearly perfectly transparent substance
  2. neither absorbs nor reflects light
  3. transmits whole of light
  4. all of the above are correct
Question 14 Multiple Choice (Single Answer)

Which of the following is a non-luminous body?

  1. Fire
  2. Sun
  3. Stars
  4. Earth
Question 15 Multiple Choice (Single Answer)

A thin layer of water is transparent but a very thick layer of water is

  1. translucent
  2. opaque
  3. most transparent
  4. more transparent
Question 16 Multiple Choice (Single Answer)

A body which allows most of the light to pass through it is called a

  1. transparent body
  2. opaque body
  3. translucent body
  4. none of these
Question 17 Multiple Choice (Single Answer)

Air is not visible because it

  1. is nearly perfectly transparent substance
  2. neither absorbs nor reflects light
  3. transmits whole of light
  4. all the above are correct
Question 18 Multiple Choice (Single Answer)

Which of the following is a transparent?

  1. Gold
  2. Glass
  3. Stone
  4. Plastic
Question 19 Multiple Choice (Single Answer)

A cyan colour light ray is passed through a blue filter. What is the colour of the light which comes out through the filter?

  1. Green
  2. Cyan
  3. Yellow
  4. Blue
Question 20 Multiple Choice (Single Answer)

What is the colour of a green leaf, when white light passing through a yellow filter is incident on it?

  1. Black
  2. Blue
  3. Yellow
  4. Green
Question 21 Multiple Choice (Single Answer)

A body which allows almost all the light to pass through it and does not reflect any light is a-

  1. transparent body
  2. opaque body
  3. translucent body
  4. polished surface
Question 22 Multiple Choice (Single Answer)

A medium which partially allows the light rays to pass through it is called -

  1. transparent
  2. opaque
  3. non-luminous
  4. translucent
Question 23 Multiple Choice (Single Answer)

Glass allows light to pass through it because it is -

  1. transparent
  2. opaque
  3. luminous
  4. non-luminous
Question 24 Multiple Choice (Single Answer)

Cellophane paper is an example of -

  1. an opaque object
  2. a translucent object
  3. a transparent object
  4. a luminous object
Question 25 Multiple Choice (Single Answer)

A leaf appears green when observed in sunlight because:

  1. It transmits green colour
  2. It absorbs green colour
  3. It disperses all colour, except green
  4. None of these
Question 26 Multiple Choice (Single Answer)

Gold is an example of a translucent metal. State whether true or false.

  1. True
  2. False
Question 27 Multiple Choice (Single Answer)

Thin glass is a transparent body. State whether true or false.

  1. True
  2. False
Question 28 Multiple Choice (Single Answer)

Select the odd one out w.r.t. transparency (wood, stone, cement, glass)

  1. glass
  2. wood
  3. stone
  4. cement
Question 29 Multiple Choice (Single Answer)

Select the odd one out w.r.t. transparency (air, fog, mist, tissue paper)

  1. air
  2. fog
  3. mist
  4. tissue paper
Question 30 Multiple Choice (Single Answer)

In ........................... lens, all the rays diverge after refraction.

  1. Concave
  2. Bi-concave
  3. Convex
  4. Bi-convex
Question 31 Multiple Choice (Single Answer)

An object is transparent if you can see through it clearly.

  1. True
  2. False
Question 32 Multiple Choice (Single Answer)

You can clearly see through a blue-tinted drinking glass.

  1. True
  2. False
Question 33 Multiple Choice (Single Answer)

Wood is an example of opaque object.

  1. True
  2. False
Question 34 Multiple Choice (Single Answer)

You can clearly see through opaque objects.

  1. True
  2. False
Question 35 Multiple Choice (Single Answer)

Which of the following is transparent?

  1. Stone
  2. Wood
  3. Plastic
  4. Glass
Question 36 Multiple Choice (Single Answer)

Which of the following is an opaque object?

  1. Wood
  2. Glass
  3. Air
  4. Vacuum
Question 37 Multiple Choice (Single Answer)

Opaque objects:

  1. Allow the light to pass through them
  2. Do not let the light to pass through them
  3. Absorb some amount of light and let the remaining to pass through them
  4. Allows the light from natural sources and rejects if it is from artificial sources