Question

I have my science exam tomorrow. Can anyone please tell the main concepts in light lesson for class 8.

Answer 1

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Answer 2

Light does not require any material medium to travel
It can travel through a very high velocity in air or vacuum
Light travels in a straight line which is called rectilinear propagation of light
Lead of reflection -
Angle of incidence =amble of reflection
Incident Ray reflected Ray and the normal lie on the same plane at the point of incidence