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What is meant by luminous objects?

Important Questions on Light

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6th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 5 - Light>EXERCISES>Q 1
What is meant by non-luminous objects? Name two luminous objects and two non-luminous objects. State whether moon is a luminous object or a non-luminous object.
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6th ICSE
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Lakhmir Singh's Science Physics>Chapter 5 - Light>EXERCISES>Q 2
What is meant by transparent materials?
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6th ICSE
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Lakhmir Singh's Science Physics>Chapter 5 - Light>EXERCISES>Q 2
What is meant by translucent material?
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6th ICSE
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Lakhmir Singh's Science Physics>Chapter 5 - Light>EXERCISES>Q 2
What is meant by opaque materials? Give two examples each of transparent, translucent, and opaque materials.
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6th ICSE
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Lakhmir Singh's Science Physics>Chapter 5 - Light>EXERCISES>Q 3
With the help of an activity prove that light travels in a straight line.
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6th ICSE
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Lakhmir Singh's Science Physics>Chapter 5 - Light>EXERCISES>Q 4
What are the factors that affect the size of the image produced by a pinhole camera?
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6th ICSE
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Lakhmir Singh's Science Physics>Chapter 5 - Light>EXERCISES>Q 5
What is an eclipse? Differentiate between a solar eclipse and lunar eclipse. 
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6th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 5 - Light>WORKSHEET>Q 1

Complete the crossword puzzle using the hints given below.
Question Image 

Across
1. Wooden board is an example of this type of material.
5. A pinhole camera works on the principle of such propagation of light.

Down
2. The region of complete darkness in a shadow.
3. Butter paper is an example of this type of material.
4. They are formed when light is obstructed by an opaque object.
6. An important characteristic of glass.
7. It creates a sense of vision in us.