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Integrated Science

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Quiz

Lesson 1: Light Reflection in Spherical Mirrors and Refraction in Convex and Concave Lenses — Lesson quiz

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  • Questions count: 2
  • Passing grade: 60%
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1.
Why is a concave lens used to correct short-sightedness (myopia)?
It converges light rays before they enter the eye
It magnifies distant objects like a telescope
It reflects light rays outward
It diverges light rays so the image forms precisely on the retina
2.
An ionic bond is formed primarily between:
Two non-metal atoms sharing pairs of valence electrons equally
Noble gas atoms at very low temperatures
A metal atom that loses electrons forming a cation and a non-metal atom that gains electrons forming an anion due to electrostatic attraction
Positive metal ions immersed in a sea of delocalized electrons
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