A Convex-Concave Thin Lens Is Made with the Radius of Curvature

question 54

Multiple Choice

A convex-concave thin lens is made with the radius of curvature of the convex surface being 25.0 cm and the concave surface 45.0 cm.If the glass used has index of refraction 1.500,what is the focal length of this lens?

• A) -32.0 cm
• B) 32.0 cm
• C) 113 cm
• D) 67.5 cm
• E) -113 cm

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Definitions:

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The amount of calcium in the bloodstream, essential for various bodily functions including bone formation, muscle contraction, and blood clotting.

Calcitonin

A hormone produced by the thyroid gland that helps regulate calcium levels in the blood by lowering them when they are high.

Glucagon

A hormone produced by the pancreas that raises blood glucose levels by promoting the breakdown of glycogen in the liver.

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Natural cycles of change in bodily functions or activities, including sleep-wake cycles and hormonal cycles, governed by internal biological clocks.