The Design of Modern X-Ray Telescopes Depends On

question 4

Multiple Choice

The design of modern X-ray telescopes depends on:

• A)lenses made of germanium.
• B)the prime focus design, with mirrors made of iron.
• C)grazing incidence optics.
• D)achromatic lenses to keep the X-rays in focus.
• E)the Cassegrain design, with mirrors made of lead.

---

Definitions:

Par Value

The nominal or face value of a stock or bond, as stated by the issuing company, that has no direct correlation to the market value.

Corporate Existence

The state of being recognized as a legal entity that is separate from its owners, enabling the corporation to own assets, incur liabilities, and enter into contracts.

Business Combination

A transaction or other event in which an acquirer obtains control of one or more businesses.

Common Stock

Equity ownership in a corporation, giving shareholders voting rights and a share in the company's profits through dividends.