Electromagnetic Radiation with a Wavelength of 641 Nm Appears as Orange

question 179

Multiple Choice

Electromagnetic radiation with a wavelength of 641 nm appears as orange light to the human eye. The energy of one photon of this light is 3.10 × 10^-19 J. Thus, a laser that emits 1.3 × 10^-2 J of energy in a pulse of light at this wavelength produces ________ photons in each pulse.

• A)2.4 × 10^-17
• B)6.3 × 10^-24
• C)2.7 × 10¹⁹
• D)4.2 × 10¹⁶
• E)6.5 × 10¹³

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Definitions:

Allowance for Doubtful Accounts

This is a contra-asset account used to estimate the portion of accounts receivable that may not be collectible.

Accounts Receivable

Funds that customers owe a company for goods or services already provided but not yet compensated for.

Allowance Method

An accounting technique used to estimate and account for a firm's potentially uncollectible accounts receivable.

Allowance for Doubtful Accounts

An estimation of the amount of accounts receivable that may not be collectible.