A Drawing Is Placed 40 Cm in Front of a Thin

question 69

Multiple Choice

A drawing is placed 40 cm in front of a thin lens.If a virtual image forms at a distance of 50 cm from the lens,on the same side as the drawing,what is the focal length of the lens?

• A)-45 cm
• B)75 cm
• C)90 cm
• D)200 cm

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Definitions:

Social Readjustment Rating Scale

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The study of the interaction between psychological processes, the nervous system, and the immune system.