Physics It is easier to roll a barrel full of coal tar than to pull it because coal tar is a liquid and it flows in the barrel when it is rolled the rolling friction is much less than the sliding friction the full weight of the barrel comes into play when it is pulled more surface area of the barrel is in contact with the road when it is pulled coal tar is a liquid and it flows in the barrel when it is rolled the rolling friction is much less than the sliding friction the full weight of the barrel comes into play when it is pulled more surface area of the barrel is in contact with the road when it is pulled ANSWER DOWNLOAD EXAMIANS APP
Physics The wavelength at which the peak of intensity of blackbody radiation occurs Decreases with increase in temperature Increases with increase in temperature Is the same at all temperatures Does not follow any pattern as temperature changes Decreases with increase in temperature Increases with increase in temperature Is the same at all temperatures Does not follow any pattern as temperature changes ANSWER DOWNLOAD EXAMIANS APP
Physics Why does the sea appear blue in colour? Scattering of the sunlight by water molecules Reflection of the sun light from water surface Interference of the sun light from water surface Refraction of the sun light Scattering of the sunlight by water molecules Reflection of the sun light from water surface Interference of the sun light from water surface Refraction of the sun light ANSWER DOWNLOAD EXAMIANS APP
Physics The resistance of a conductor is inversely proportional to its: Area of cross section Length Temperature Resistivity Area of cross section Length Temperature Resistivity ANSWER DOWNLOAD EXAMIANS APP
Physics A bullet of mass 10gm is fired with a velocity of 40 m/s from a gun of mass 8 kg. Find the recoil velocity (in m/s) of the gun. 0.05 2 4 0.1 0.05 2 4 0.1 ANSWER DOWNLOAD EXAMIANS APP
Physics Who defined the law of gravitation ? Galileo Archimedes Faraday Newton Galileo Archimedes Faraday Newton ANSWER DOWNLOAD EXAMIANS APP
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