The point on the principal axis where all the light rays meet or appear to meet is called ________.

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Solution

Principal focus: The point on the principal axis at which rays parallel to the principal axis meet or appear to meet after reflection is the principal focus.
Hence, the point on the principal axis where all the light rays meet or appear to meet is called the principal focus.

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The point on the principal axis where all the light rays meet or appear to meet is called ________.

Principal focus: The point on the principal axis at which rays parallel to the principal axis meet or appear to meet after reflection is the principal focus.Hence, the point on the principal axis where all the light rays meet or appear to meet is called the principal focus.

Principal focus: The point on the principal axis at which rays parallel to the principal axis meet or appear to meet after reflection is the principal focus.
Hence, the point on the principal axis where all the light rays meet or appear to meet is called the principal focus.