What is the speed of light?
Rectilinear propagation of light means?
In lunar eclipses,the?
Shadows are formed when light is blocked by?
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1. The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is defined as 299792458 metres per second.
2. The rectilinear propagation of light means that light travels in straight lines as a wave. ... An eclipse of the moon (lunar eclipse) occurs when the earth comes between the sun and the moon and prevents some of the light from the sun from reaching the moon.
3. Shadows are formed when an opaque object or material is placed in the path of rays of light.
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