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The physics phenomenon when, in polar regions like Alaska and Northern Canada, a splendid display of colours is seen in the sky is called a/an:
star's intrinsic luminosity
star shower
active galactic nucleus
aurora borealis
- Option 1: Star's intrinsic luminosity
- This is a measure of the total energy emitted by a star per unit time.
- It pertains to the inherent brightness of stars, not to colorful sky displays.
- Option 2: Star shower
- Incorrectly phrased, possibly meant as "meteor shower."
- Meteor showers are celestial events with numerous meteors in the sky, not the colorful displays in polar regions.
- Option 3: Active galactic nucleus
- A highly energetic region at the center of some galaxies, outshining the rest of the galaxy.
- Not related to atmospheric phenomena on Earth.
- Option 4: Aurora Borealis
- Known as the Northern Lights, this is indeed the splendid display of colors seen in the polar sky.
- Caused by the interaction of solar wind with Earth's magnetic field.
By: Kamal Kashyap ProfileResourcesReport error
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