Physics In a railway track, two rails are joined end to end with a gap in between them because Steel can be saved Accidents due to expansion in summer can be avoided Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided Steel can be saved Accidents due to expansion in summer can be avoided Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided ANSWER DOWNLOAD EXAMIANS APP
Physics The time period of a seconds pendulum is 2 seconds 0.5 second 1.5 second 1 second 2 seconds 0.5 second 1.5 second 1 second ANSWER DOWNLOAD EXAMIANS APP
Physics The minimum number of geostationary satellites needed for uninterrupted global coverage is : 4 2 1 3 4 2 1 3 ANSWER DOWNLOAD EXAMIANS APP
Physics A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ? Disk Depends on their masses Sphere Both reach at the same time Disk Depends on their masses Sphere Both reach at the same time ANSWER DOWNLOAD EXAMIANS APP
Physics The force of friction between two surfaces will increase if: Irregularities on both the surfaces are removed Air gap is created between the two surfaces The two surfaces are pressed harder A layer of lubricant is kept between the two surfaces Irregularities on both the surfaces are removed Air gap is created between the two surfaces The two surfaces are pressed harder A layer of lubricant is kept between the two surfaces ANSWER DOWNLOAD EXAMIANS APP
Physics Specific gravity is defined as the ratio of Density of the substance to the density of water at 4°C Density of the substance to the density of water at 0°C Density of water at 4°C to the density of the substance Density of the substance to the density of water Density of the substance to the density of water at 4°C Density of the substance to the density of water at 0°C Density of water at 4°C to the density of the substance Density of the substance to the density of water ANSWER DOWNLOAD EXAMIANS APP
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