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What are the substances that do not allo...

What are the substances that do not allow light to pass through them called?

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ICSE-LIGHT-Picture Based Questions
  1. How can a non-luminous metal such as iron be made luminous?

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  2. What is bioluminescence?

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  3. What are the substances that allow most of the light to pass through t...

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  4. What are the substances that do not allow light to pass through them c...

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  5. Transparent object and translucent object

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  6. The moon does not have light of its own. How are we then able to see t...

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  7. What happens if an opaque object is placed in the path of light as sho...

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  8. How does the nature of a shadow depend on the light source?

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  9. How much light does the umbra region of a shadow receive from the sour...

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  10. What is the region of a shadow that receives some light from the sourc...

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  11. Label the figure.

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  12. What are the characteristics of an image formed by a pinhole camera?

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  13. What determines the size of a pinhole camera image?

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  14. Name the type of eclipses shown in the Figures 1 and 2.

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  15. Why do these objects form shadows?

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  16. When does a lunar eclipse take place?

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  17. In which region of the Earth's shadow is the moon, when a total lunar ...

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  18. Which celestial object is responsible for blocking the light of the su...

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  19. What is the position of an observer on the Earth who sees a partial so...

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  20. When does a solar eclipse take place?

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