When We View the Sun's Disk in Visible Light,we See

question 270

Multiple Choice

When we view the Sun's disk in visible light,we see less deeply into the Sun near the limb than at the center of the disk because of the interaction of the light with atoms of the gas.What conclusion can be drawn from the observation that the Sun appears less bright near the limb than it does at the disk center?

• A) The light from the solar limb is redshifted because of solar rotation, and this phenomenon gives the appearance of cooler gas at the limb.
• B) The temperature of the gas increases with increasing height in the solar atmosphere.
• C) The light has to travel through more of the solar corona from the limb; hence, it is reduced in intensity and appears cooler.
• D) The temperature of the gas falls with increasing height in the solar atmosphere.

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Definitions:

Long-Run Phillips Curve

A concept suggesting that in the long term, there is no trade-off between inflation and unemployment, implying that inflation does not affect the natural rate of unemployment.

Short-Run Phillips Curve

The Short-Run Phillips Curve depicts an inverse relationship between unemployment and inflation in the short term, indicating that lower unemployment can come with higher inflation.

Monetary Policy

The process by which a government, central bank, or monetary authority manages the money supply to achieve specific goals, such as controlling inflation, maintaining employment, and stabilizing the currency.

Short-Run Phillips Curve

A curve that illustrates a short-term trade-off between inflation and unemployment, suggesting lower unemployment can come at the cost of higher inflation.