what is totally internal reflection of light? under what. condition does tired occur? why is it called so?
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Total internal reflection of lighteans complete refection of light in the same medium. It occurs only when the incident ray is greater than critical angle
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Explanation:
when a ray of light passes from one medium of higher optical density to a medium of lower optical density at an angle of incidence greater than the critical angle,the ray is reflected back to the same medium without undergoing refraction. this phenomenon is known as total internal reflection.
fatigue, either alone or in combination: Psychological and psychosocial – stress, anxiety, and depression. Physical – anemia, diabetes, glandular fever, and cancer. Physiological – pregnancy, breast-feeding, inadequate sleep, and excessive exercise.
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