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 velocity of sound in air Decreases with increase of temperature Does not depend on temperature Decreases with decrease of temperature Increases with decrease of temperature Decreases with increase of temperature Does not depend on temperature Decreases with decrease of temperature Increases with decrease of temperature ANSWER DOWNLOAD EXAMIANS APP
Physics One light year is equal to 6 trillion miles 9 trillion miles 2 trillion miles 8 trillion miles 6 trillion miles 9 trillion miles 2 trillion miles 8 trillion miles ANSWER DOWNLOAD EXAMIANS APP
Physics Rainbows are produced when sunlight : None of the given statements is correct. Incident on rain drops hanging in the atmosphere is dispersed after suffering refraction and internal reflection. Incident on rain drops hanging in the atmosphere is dispersed after suffering refraction Incident on raindrops hanging in the atmosphere is dispresed after suffering reflection. None of the given statements is correct. Incident on rain drops hanging in the atmosphere is dispersed after suffering refraction and internal reflection. Incident on rain drops hanging in the atmosphere is dispersed after suffering refraction Incident on raindrops hanging in the atmosphere is dispresed after suffering reflection. ANSWER DOWNLOAD EXAMIANS APP
Physics When number of turns in a coil is trippled, without any change in the length of coil, its self inductance becomes? One–third Six times Three times Nine times One–third Six times Three times Nine times ANSWER DOWNLOAD EXAMIANS APP
Physics The increasing order of the refractive index of certain materials is (left to right) ________ Ice, Kerosene, Benzene, Rock Salt Rock Salt, Ice, Benzene, Kerosene Kerosene, Ice, Benzene, Rock Salt Rocksalt, Benzene, Kerosene, Ice Ice, Kerosene, Benzene, Rock Salt Rock Salt, Ice, Benzene, Kerosene Kerosene, Ice, Benzene, Rock Salt Rocksalt, Benzene, Kerosene, Ice ANSWER DOWNLOAD EXAMIANS APP
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