How Far Must a Man's Face Be Located in Front

question 47

Multiple Choice

How far must a man's face be located in front of a concave spherical shaving mirror of radius 120 cm for him to see an erect image of his face four times its real size?

• A)-75 cm
• B)45 cm
• C)75 cm
• D)90 cm
• E)150 cm

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Definitions:

Trade Discount

A reduction in the listed price of goods or services offered by a vendor to buyers in the same trade.

Channel Members

Channel members refer to the set of intermediaries that a product passes through from production to final sale, including wholesalers, distributors, and retailers.

Services Perform

The process of executing or delivering a service to fulfill a need or requirement of a customer.

Markup

The amount added to the cost price of goods to cover overhead and profit; the percentage increase on the original cost.