Physics A mirage occurs because of Total internal reflection by layers of air Reflection by hot ground Interference of light Diffraction of light Total internal reflection by layers of air Reflection by hot ground Interference of light Diffraction of light ANSWER DOWNLOAD EXAMIANS APP
Physics What is the SI unit of temperature? Joule Fahrenheit Celsius Kelvin Joule Fahrenheit Celsius Kelvin ANSWER DOWNLOAD EXAMIANS APP
Physics Every hot object emits ________ Ultraviolet rays Infrared rays X–rays Visible light Ultraviolet rays Infrared rays X–rays Visible light ANSWER DOWNLOAD EXAMIANS APP
Physics Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons? 2.2 km, 0.20 km 2.8 km, 0.25 km 3.3 km, 0.30 km 1.8 km, 0.15 km 2.2 km, 0.20 km 2.8 km, 0.25 km 3.3 km, 0.30 km 1.8 km, 0.15 km ANSWER DOWNLOAD EXAMIANS APP
Physics Why do birds not have respiratory trouble at the time of flying at high altitude ? Their lungs are very large They fly inactively They use less oxygen They have extra air sacs Their lungs are very large They fly inactively They use less oxygen They have extra air sacs ANSWER DOWNLOAD EXAMIANS APP
Physics Energy in reflected light : Increases with the increase in angle Decreases with the increase in angle of incidence Becomes maximum for angle of incidence equal to 45° Does not depends on the angle of incidence Increases with the increase in angle Decreases with the increase in angle of incidence Becomes maximum for angle of incidence equal to 45° Does not depends on the angle of incidence ANSWER DOWNLOAD EXAMIANS APP
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