A Lens Forms an Erect Image of a Real Object

question 56

Multiple Choice

A lens forms an erect image of a real object.The image is twice the size of the object and appears to be 40 cm from the lens.Determine the power of the lens in diopters (D) .

• A)There is not sufficient information.
• B)-2.5 D
• C)+2.5 D
• D)+7.5 D
• E)None of these is correct.

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Definitions:

McGregor's Theory X

A management theory that assumes employees are inherently lazy and will avoid work if they can, necessitating control and coercion by management.

Theory Y

Refers to a management style that is optimistic about employees, assuming they find work as natural as play and will be self-directed if the job is satisfying.

Industrial Revolution

A period of major industrialization from the late 18th to early 19th century that transformed mainly agricultural societies into industrialized and urban ones.

Company Towns

Historically, communities where practically all stores and housing are owned by the one company that is also the main employer.