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A Lens of Focal Length 90 Mm Is Used as a Magnifier

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A lens of focal length 90 mm is used as a magnifier by a person with a near point of 25 cm.The object being viewed is 9.9 mm long,and is positioned at the focal point of the lens.What is the angle subtended by the image at infinity,in milliradians?


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Unique Risk

Risk that is specific to a single asset or to a small group of assets, also known as unsystematic risk.

Unique Risk

Also known as unsystematic risk, it refers to the risk associated with a specific company or industry.

Diversifiable Risk

The portion of an investment's risk that can be reduced or eliminated through the practice of diversifying one's investment portfolio across various assets.

Systematic Risk

The inherent risk affecting the overall market or a particular sector, which cannot be eliminated through diversification.

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