An Object Is Placed 60 Cm in Front of a Mirror

question 1

Multiple Choice

An object is placed 60 cm in front of a mirror and the image is upright and ¼ the size of the object. What is the focal length of the mirror?

• A) −12 cm
• B) −20 cm
• C) −45 cm
• D) −75 cm
• E) some positive value not given

Appreciate the importance of clear role expectations and communication within stepfamilies.

Recognize the financial and emotional impacts of remarriage on children.

Analyze the importance of flexibility and integration for the health of stepfamily relationships.

Understand the societal views on the obligations towards biological and stepparents.

---

Definitions:

Spinal Cord

A long, thin, tubular structure made up of nervous tissue that extends from the brainstem down the back, enclosed in the vertebral column.

Lumbar Plexus

A network of nerve fibers in the lower back (lumbar region) that supplies nerves to the lower limb.

Major Nerve

A principal nerve, typically large in size, that carries significant sensory or motor information to and from the central nervous system.

Brachial Plexus

A network of nerves that originate from the spinal cord in the neck and supply the arm and hand.