Certain Planes of a Crystal of Halite Have a Spacing

question 88

Multiple Choice

Certain planes of a crystal of halite have a spacing of 0.399 nm.The crystal is irradiated by a beam of x-rays.First order constructive interference occurs when the beam makes an angle of 20° with the planes of the crystal surface.What angle does the beam make with the crystal planes for second order constructive?

• A)37°
• B)40°
• C)43°
• D)46°
• E)49°

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Definitions:

Retention Ratio

The proportion of earnings that is not distributed as dividends to shareholders, but is retained by the company for reinvestment.

Cash Dividends

Distributions of profits from a corporation to its shareholders as payments.

Selling and Administrative Expenses

Indirect costs not directly tied to product production, including marketing, management, rent, and utilities.

Significance Level

A threshold in statistical hypothesis testing that determines the probability of rejecting the null hypothesis when it is actually true.