A Helium-Neon Laser (λ = 632

question 15

Multiple Choice

A helium-neon laser (λ = 632.8 nm) is used to calibrate a diffraction grating. If the first-order maximum occurs at 20.5°, what is the line spacing, d?

• A)1.81 × 10−6 m
• B)1.00 × 10−5 m
• C)1.00 × 10−4 m
• D)1.31 × 10−6 m
• E)6.76 × 10−7 m

---

Definitions:

Marketable Securities

Financial instruments that can be easily converted into cash at a fair value in the short term.

Interest Rate Risk

Interest rate risk is the potential for investment losses due to fluctuations in interest rates, affecting the value of interest-bearing assets like bonds.

Collection Policy

The procedures used by a company to manage and collect accounts receivable, or the money owed by customers.

Aggressive Collection

Intensive efforts by a company to recover owed money from its debtors, possibly including legal actions and persistent contact.