Physics It is easier to roll a barrel full of coal tar than to pull it because 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 full weight of the barrel comes into play when it is pulled the rolling friction is much less than the sliding friction 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 full weight of the barrel comes into play when it is pulled the rolling friction is much less than the sliding friction ANSWER DOWNLOAD EXAMIANS APP
Physics Stars appear twinkling because of ......... of light. Reflection Emission Scattering Absorption Reflection Emission Scattering Absorption ANSWER DOWNLOAD EXAMIANS APP
Physics Why the needle of iron swims on water surface when it is kept gently ? It will remain under the water, when it will displace more water than its weight Due to its shape Due to surface tension The density of needle is less than that of water It will remain under the water, when it will displace more water than its weight Due to its shape Due to surface tension The density of needle is less than that of water ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is not reversible? Joule effect Peltier effect Seebeck effect Thomson effect Joule effect Peltier effect Seebeck effect Thomson effect ANSWER DOWNLOAD EXAMIANS APP
Physics In a bipolar junction transistor The base has the least concentration of impurity All the three regions (the emitter, the base and the collector) have equal concentrations of impurity The emitter has the least concentration of impurity The collector has the least concentration of impurity The base has the least concentration of impurity All the three regions (the emitter, the base and the collector) have equal concentrations of impurity The emitter has the least concentration of impurity The collector has the least concentration of impurity ANSWER DOWNLOAD EXAMIANS APP
Physics The fuse in an electric circuit is connected in Series with live Parallel to live Parallel to neutral Series with neutral Series with live Parallel to live Parallel to neutral Series with neutral ANSWER DOWNLOAD EXAMIANS APP
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