IGCSE /Grade 10
Science MCQ Based On Principal focus and focal length
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IGCSE Grade 10 Science Principal focus and focal length
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The focus of concave lens
power
Parallel to the principal axis.
1/f=1/v +1/u
Lens
The focal length is the distance between the lens and the focal point.
The rays of light incident parallel to the principal axis after refraction.
Distance between focus and pole
It is a characteristic property of the mirror and determines how the mirror reflects light.
2F=30
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