QUESTION5 True or false. The three major functions of a telescope are magnificat

Question

QUESTION5 True or false. The three major functions of a telescope are magnification, making objects brighter, and improving resolution? 5 points Saved OA. True B. False QUESTION 6 5 points What problem does "adaptive optics" overcome? O A. Bluming caused by the Earth's atmosphere B. Difficulties achieving high magnification C. The problem of .chromatic aberration." D. The problem of low Ight gathering power. Saved QUESTION 7 5 points Saved What looks like a "surface on the Sun is actually gassy, not solid. It emits the light that we soe from Earth. What is the name of this layer? O A Photosphere B. Corona ° C. Radiation Zone D. Chromosphere on QUESTION 8 5 points Saved What is true about the outermost layer of the Sun's atmosphere (corona)? OA Ris a few million degrees in temperature. B. It is the coolest layer of the Sun.

Explanation / Answer

5. True

Three functions of a normal telescope are making object brighter(light gathering), resolving, and magnifying.

Light gathering= it is proportional to the square of the diameter of the aperture.

Resolving= it is proportional to the diameter of the aperture.

Magnification= the image produced by the telescope’s optical train must be made large enough so that we can see details in it.

6. Adaptive optics helps by clearing the blurring caused by the earth's atmosphere. It is done by correcting the deformations of an incoming wavefront by deforming a mirror in order to compensate for the distortion.

7. The name of the layer is photosphere, which is gassy in nature. Since the sun is a ball of gas with no solid form, different regions rotate at different rates. The sun's equatorial regions rotate in about 24 days, while the polar regions take more than 30 days to make a complete rotation

8. Corona is not always visible but it appears as white streamers or plumes of ionized gas. flow outward into space. Sun's corona temperature can get as high as 3.5 million degrees F (2 million degrees C).

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