Hollow-Cathode Lamps Emit Light with Very Sharp Linewidths

question 12

Multiple Choice

Hollow-cathode lamps emit light with very sharp linewidths.Which mechanisms are responsible for broadening atomic emission line widths?
I pressure broadening
II ionization effect
III matrix effect
IV Doppler effect

• A)I and IV
• B)II,III,and IV
• C)I,III,and IV
• D)II and IV
• E)III and IV

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Definitions:

Structural Unemployment

The loss of jobs stemming from changes in industrial setups, usually driven by innovations in technology, instead of shifts in market demand or supply.

Bank Tellers

Employees of banks who deal directly with customers, handling transactions and other financial inquiries.

Automated Teller Machines

Electronic banking outlets that allow customers to complete transactions without the need for a branch representative or teller.

Official Unemployment Rate

The percentage of the labor force that is jobless and actively seeking employment, as officially calculated by national statistical agencies.