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The Angle Between Two Plane Mirrors That Meet at One °\degree

question 4

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The angle between two plane mirrors that meet at one edge is 45 °\degree .The change in direction of a ray that strikes the first mirror at a 60 °\degree angle of incidence when that ray reflects from the second mirror is


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Validity

The extent to which a test, tool, or research accurately measures what it is intended to measure.

Reliability

The consistency of a measure or assessment tool in producing stable results over time.

Maturation

The process of becoming mature; the process of developing in the body or mind naturally over time.

Culture

The shared values, customs, and social practices of a particular group or society that influence behavior and perceptions.

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