The Focal Lengths of the Objective Lens and the Eyepiece

question 50

Multiple Choice

The focal lengths of the objective lens and the eyepiece of a microscope are 0.50 cm and 2.0 cm, respectively, and their separation adjusted for minimum eyestrain is 6.0 cm. If the microscope is
Focused on a small object, what is the distance between the object and the objective lens?

• A) 0.57 cm
• B) 0.31 cm
• C) 0.49 cm
• D) 0.73 cm
• E) 0.42 cm

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Definitions:

Allowance

In accounting, an estimate for future adjustments to accounts receivable, reflecting debts that might not be collectible.

Allowances for Doubtful Accounts

Allowances for doubtful accounts is a contra asset account used to estimate the portion of a company's receivables that may ultimately not be collectible.

Bad Debt Expense

Bad debt expense represents the loss that a company incurs when it is unable to collect receivables from customers who are unable to pay their debts.

Adjusting Entry

Refers to adjustments made in the books of accounts to record expenses or revenues that have occurred but are not accurately represented in financial statements.