Question No 1) DescribeCritical Angle
Question No 2)Explain the phenomenon of a desert mirage.
Answers
Answer:
Mirage is an optical illusion caused due to total internal reflection of light. The light gets refracted when it passes from cold to hot air and so light bends. The refracted light reaches to a point where the light tends to form an angle of 90 degree. Mirage is a phenomenon which can be seen when the surface air gets heated up and it becomes lighter. Lighter air moves up in the atmoshphere. When the lighter air from cooler areas to warmer areas are refracted and they bent upwards. It usually occurs in deserts. It occurs in hot atmospheric conditions.
Answer:
Explanation:
Critical angle: the angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense medium are no longer refracted but totally reflected.
Mirage:
A mirage is a naturally occurring optical phenomenon in which light rays bend via refraction to produce a displaced image of distant objects or the sky.
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