A Convex Mirror Has a Focal Length of −20 Cm

question 14

Multiple Choice

A convex mirror has a focal length of −20 cm. What is the position of the resulting image (in cm) if the image is upright and four times smaller than the object?

• A) −100
• B) −25
• C) −50
• D) −15
• E) −10

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Definitions:

Perceive Color

The process by which beings with sight interpret the electromagnetic spectrum reflected off objects into the experience of color.

Retinex Theory

A theory explaining how the human eye perceives color, proposing that the brain uses comparative information from different light wavelengths.

Cortex

The outer layer of the cerebrum of the brain, involved in a variety of high-level brain functions such as thought, memory, and consciousness.

Bipolar Cells

A type of neuron found in the retina, playing a key role in visual processing by transmitting signals from photoreceptors to ganglion cells.