An Object Is Placed at a Distance of 50 Cm

question 31

Multiple Choice

An object is placed at a distance of 50 cm from a thin lens along the axis.If a real image forms at a distance of 40 cm from the lens,on the opposite side from the object,what is the focal length of the lens?

• A)22 cm
• B)45 cm
• C)90 cm
• D)200 cm

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Definitions:

Norepinephrine

A neurotransmitter and hormone involved in the body's response to stress, increasing heart rate, blood pressure, and sugar levels in the bloodstream.

Serotonin

A neurotransmitter associated with mood regulation, emotion, and sleep.

Lithium

A chemical element and mood-stabilizing drug used primarily in the treatment of bipolar disorder.

Suicide Rates

The number of suicides occurring within a given population and time frame, often expressed per 100,000 individuals per year.