A Converging Lens of Focal Length 20 Cm Is Placed

question 43

Multiple Choice

A converging lens of focal length 20 cm is placed in contact with, and to the left of, a diverging lens of focal length 30 cm.If an object is placed 40 cm to the left of the converging lens, the total magnification is:

• A)-3.0
• B)-1.5
• C)-1.0
• D)2.0
• E)3.0

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Definitions:

Parasympathetic Nervous System

A division of the autonomic nervous system responsible for conserving energy and slowing down the heart rate, among other functions.

Digestion

The process by which the body breaks down food into small nutrient molecules that can be absorbed and utilized.

Rest Activities

Activities designed to provide relaxation and recuperation from physical or mental exertion.

Fight or Flight

A physiological response to perceived harmful events, attacks, or threats to survival, preparing the body to either confront or avoid the danger.