A Concave Mirror Has a Focal Length of 20 Cm

question 43

Multiple Choice

A concave mirror has a focal length of 20 cm. What is the magnification if the object and image distances are 10 cm and −20 cm respectively?

• A) 1
• B) 2
• C) 1/2
• D) 1/4
• E) −1/2

---

Definitions:

Classical Conditioning

An educational process that unfolds by linking an external stimulus with a naturally happening stimulus, which results in a conditioned response.

Classical Conditioning

is a learning process that occurs when two stimuli are repeatedly paired; a response that is at first elicited by the second stimulus is eventually elicited by the first stimulus alone.

Classical Conditioning

A method of learning that involves forming connections between stimuli in the environment and those that occur naturally.

Modify Behavior

The process of changing or adjusting one's actions, reactions, or habits, often through various forms of learning or intervention.