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Explain how an opaque paper can be made ...

Explain how an opaque paper can be made translucent.

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A paper is a tranlucent medium of light. The pores of an opaque paper do not allow any light of get transmitted as some part of it get either absorbed or reflected . On oiling it , the pores get filled with oil, and hence, some part of light can be transmitted while remaining light gets reflected or absorbed , Hence, oiled paper behaves as a translucent object.
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Knowledge Check

  • Assertion : On the basis of transparency, materials can be grouped as transparent, translucent and opaque. Reason : Oiled paper is translucent.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If assertion is false and reason is true

  • Those substances through which things can be seen, are called transparent. On the other hand, there are some materials through which you are not able to see. These materials are called opaque. The materials through which objects can be seen, but not clearly, are known as translucent. We can therefore group materials as opaque, transparent and translucent. Shopkeepers usually prefer to keep eatables in transparent containers of glass or plastic so that buyers can easily see these items. Otherwise you cannot tell what is kept in a closed wooden box, a cardboard or a metal container. List out translucent object among the following.

    A
    Muddy water
    B
    Metal sheet
    C
    Diamond
    D
    Wooden plank

  • Those substances through which things can be seen, are called transparent. On the other hand, there are some materials through which you are not able to see. These materials are called opaque. The materials through which objects can be seen, but not clearly, are known as translucent. We can therefore group materials as opaque, transparent and translucent. Shopkeepers usually prefer to keep eatables in transparent containers of glass or plastic so that buyers can easily see these items. Otherwise you cannot tell what is kept in a closed wooden box, a cardboard or a metal container. Which statement is not true about opaque substances?

    A
    Opaque substances absorb most of the light falling on them.
    B
    We cannot see the objects through opaque substances.
    C
    A mirror is an opaque substance.
    D
    Opaque substances reflect most of the light falling on them.

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    Those substances through which things can be seen, are called transparent. On the other hand, there are some materials through which you are not able to see. These materials are called opaque. The materials through which objects can be seen, but not clearly, are known as translucent. We can therefore group materials as opaque, transparent and translucent. Shopkeepers usually prefer to keep eatables in transparent containers of glass or plastic so that buyers can easily see these items. Otherwise you cannot tell what is kept in a closed wooden box, a cardboard or a metal container. Choose the transparent substance.

    Those substances through which things can be seen, are called transparent. On the other hand, there are some materials through which you are not able to see. These materials are called opaque. The materials through which objects can be seen, but not clearly, are known as translucent. We can therefore group materials as opaque, transparent and translucent. Shopkeepers usually prefer to keep eatables in transparent containers of glass or plastic so that buyers can easily see these items. Otherwise you cannot tell what is kept in a closed wooden box, a cardboard or a metal container. Which of the following bodies cast sharp shadows when placed in the part of light?

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