Question

Define the principal focus of a concave mirror.

Answer 1

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Define the principal focus of a concave mirror. Answer: Light rays that are parallel to the principal axis of a concave mirrorconverge at a specific point on its principal axis after reflecting from the mirror. This point is known as the principal focus of theconcave mirror.
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Answer 2

The principal focus of a concave mirror is:

• A concave mirror, or converging mirror, has a reflecting surface that is recessed inward (away from the incident light). Light is reflected inward by concave mirrors to a single focal point.
• The principal focus is defined as the point where a beam parallel to the principal axis appears to diverge but converges after passing through the lens from a position on the principal axis.
• There are five situations in which the qualities of a picture obtained by a concave mirror can be understood.

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