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10 questions from this quiz
How light behaves with mirrors and lenses
Direction of light wavefront movement
It travels in straight lines
Light from the object enters our eyes
Reflection, absorption, transmission
Line perpendicular to surface at impact
θi=θr\theta_i = \theta_rθi=θr
The normal
Light from focal point creates parallel beam
c=3×108c = 3 \times 10^8c=3×108 m·s−1^{-1}−1
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