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Subjects
Science State Board
Class 7
Light
Light and its properties
4.
Reflection and pin hole camera
Exercise condition:
4
m.
Drag the right answer
:
1
.
The speed of light is
3x10^6 m/s
3x10^8 m/s
.
2
.
The path of light is
Straight line
Curvilinear
.
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