Answer:
20.7N
Explanation:
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Explanation:
Polaris also called North star is the brightest star in the the constellation Ursa Minor. It remains stationary whereas entire north sky move around it. It the point of north celestial pole.
A) False. This is because All of the stars move in a counterclockwise path around Polaris.
B) False. Reason stated above.
C) True, As the stars move towards the Polaris there orbital radius decreases as they move smaller circles.
D) False, As the stars move towards the Polaris there orbital radius decreases as they move smaller circles.
E) True.
F) False.
To gather light from a far-off star, a concave mirror with a radius of curvature of 1.0 m is utilized. Most likely 0.25 meters separate the mirror from the star's picture.
A concave mirror is a kind of spherical mirror in which the reflecting surface is the inside radius of curvature of the sphere, or in other words, the reflecting surface appears to be far from the incident light source. Is called concave mirror.
The reciprocal of the curvature is known as the radius of curvature, or R. It is equal to the circumference of the circular arc that, at that location, most closely resembles the curve. The circle's radius that best matches a normal section is known as the radius of curvature for surfaces.
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