Question

what is acceptance angle​

Answer 1

Explanation:

Acceptance angle is the maximum angle at which incoming sunlight can be captured by a solar concentrator. Its value depends on the concentration of the optic and the refractive index in which the receiver is immersed.

Answer 2

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Acceptance angle may refer to:-

Half of the angular aperture of an optical system.

Acceptance angle (optical fiber), the angle in an optical fiber below which rays are guided rays.

Acceptance angle (solar concentrator)