Physics Sound becomes hazardous noise pollution at decibels? Above 30 db Above 80 db Above 120 db Above 50 db Above 30 db Above 80 db Above 120 db Above 50 db ANSWER DOWNLOAD EXAMIANS APP
Physics Energy in reflected light : 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 Increases with the increase in angle Decreases with the increase in angle of incidence Becomes maximum for angle of incidence equal to 45° ANSWER DOWNLOAD EXAMIANS APP
Physics In very cold countries alcohol is used as a thermometric liquid because Alcohol is a poor conductor of heat It will not stick to the glass tube Alcohol can be coloured for its level to be seen easily Its freezing point is very low Alcohol is a poor conductor of heat It will not stick to the glass tube Alcohol can be coloured for its level to be seen easily Its freezing point is very low 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 1.8 km, 0.15 km 3.3 km, 0.30 km 2.2 km, 0.20 km 2.8 km, 0.25 km 1.8 km, 0.15 km 3.3 km, 0.30 km ANSWER DOWNLOAD EXAMIANS APP
Physics The swing of a spinning cricket ball in air can be explained on the basis of Sudden change in wind direction. Bernoulli's theorem. Turbulence caused by wind. Buoyancy of air. Sudden change in wind direction. Bernoulli's theorem. Turbulence caused by wind. Buoyancy of air. ANSWER DOWNLOAD EXAMIANS APP
Physics It is more difficult to walk on ice than on a concrete road because There is very little friction between the ice and feet pressing it Ice is soft when compared to concrete None of these There is more friction between the ice and feer There is very little friction between the ice and feet pressing it Ice is soft when compared to concrete None of these There is more friction between the ice and feer ANSWER DOWNLOAD EXAMIANS APP
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