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प्रश्न
Boojho found a bag containing the following materials
- Mirror
- Paper stained with oil
- Magnet
- Glass spectacles
Help Boojho in finding out the material(s) which is/are opaque.
विकल्प
(i) only
(iv) only
(i) and (iii)
(ii) and (iv)
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उत्तर
(i) and (iii)
Explanation:
Mirror is opaque since it is painted on one side. Magnet is opaque since it is made up of iron metal.
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संबंधित प्रश्न
Short Answer Type Question:
What are the similarities between iron, copper, and aluminium?
Short Answer Type Question:
What is the reason for grouping materials?
Sand paper is a good example for smooth materials.
Sort the given objects as rough or smooth.
| Wet soap | Coir | Feather | Stone |
| ______ | ______ | ______ | ______ |
| Glass ball | Paperboard | Sand paper | Plastic spoon |
| ______ | ______ | ______ | ______ |
Choose the odd one:
Soft materials can be early compressed.
Smooth materials do not have ups and downs.
Soft material ______.
What is material?
Differentiate among opaque, translucent and transparent materials, giving one example of each.
