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प्रश्न
The sun is seen before the sunrise and after the sunset.
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उत्तर
EARLY SUNRISE and SUNSET: At sun Rise: When the Sun is just below the horizon, the light from the Sun suffers refraction from RARE to DENSER medium (As the atmosphere is warmer than layers near the earth at that time) bends towards the normal at each refraction. Due to continuous bending of light rays, the Sun can be seen even when its actual position is just below the Horizon. As a result, the Sun is seen in advance, two minutes before it rises above the horizon in the morning.
Similarly, in the evening Sun is seen delayed by 2 minutes longer above the horizon after the Sunset.
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संबंधित प्रश्न
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
If a spherical mirror breaks, what type of mirrors are the individual pieces?
Draw a ray diagram to show the formation of image by a concave mirror for an object placed between its pole and focus. State three characteristics of the image.
Discuss the position and nature of image formed by a concave mirror when an object is moved from infinity towards the pole of mirror.
Discuss the position and nature of image formed by a convex mirror when an object is moved from infinity towards the pole of mirror.
What do you understand by the term real image?
An object 10 cm high is placed at a distance of 20 cm in front of a spherical mirror of focal length 25 cm. By scale drawing find the nature, position, and magnification of the image in the following case:
Concave mirror
An object is placed in front of a concave mirror as shown in the following figure. By scale drawing, find the nature of the image. Given f = 10 cm, v = 30 cm.
