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Question

Two students while sitting across a table looked down on to its top surface. They noticed that they could see their own and each other’s image. The table top is likely to be made of


A

Unpolished wood

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B

Red stone

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C

Glass sheet

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D

Wood top covered with cloth

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Solution

The correct option is C

Glass sheet


Classification of objects based on interaction with light

  1. Based on the interaction of light, three types of objects can be seen.

Transparent objects are those, that allow light to pass through them without getting scattered. for example glass

Translucent objects are those, that allow light to pass through them partially. For example butter paper.

Opaque objects are those, that do not allow any light to pass through them. For example a table, a book, etc.

2. In order to see the reflection in an object, the light must pass through the object, and the light should not scatter. Hence, only a transparent object is required.

3. Unpolished wood, red stone, and wood top covered with cloth all are opaque objects.

Hence, option (A), option (B), and option (D) all are incorrect.

4. Only the transparent object in the list is a glass sheet.

Hence, the tabletop is likely to be made of a glass sheet.

Therefore, option (C) is correct.


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