How Many Grating Grooves Are Needed to Resolve Two Spectral

question 42

Multiple Choice

How many grating grooves are needed to resolve two spectral lines at λ = 351 nm separated by 0.59 nm in order m = 4?

• A)149 grooves
• B)595 grooves
• C)0 grooves
• D)297 grooves

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Definitions:

Allowance for Doubtful Accounts

A contra-account that reduces the total receivables on the balance sheet by an amount expected to be uncollectible.

Income Statement Approach

A method for determining certain balances that should appear on the income statement by considering revenues and expenses, rather than focusing directly on cash flow.

Uncollectible Accounts

Accounts receivable that a business cannot collect, often recognized as an expense as bad debt or written off.

Aging

A method used in accounting to categorize accounts receivable based on the length of time an invoice has been outstanding.