Physics In a railway track, two rails are joined end to end with a gap in between them because 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 Steel can be saved Accidents due to expansion in summer can be avoided 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 A layer of lubricant is kept between the two surfaces The two surfaces are pressed harder Irregularities on both the surfaces are removed Air gap is created between the two surfaces A layer of lubricant is kept between the two surfaces The two surfaces are pressed harder ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following reflects back more sunlight as compared to other three? Sand desert Prairie land Land covered with fresh snow Paddy crop land Sand desert Prairie land Land covered with fresh snow Paddy crop land ANSWER DOWNLOAD EXAMIANS APP
Physics Dioptre is the unit of Sound intensity Power of a lens Light intensity Focal length of a lens Sound intensity Power of a lens Light intensity Focal length of a lens ANSWER DOWNLOAD EXAMIANS APP
Physics The minimum number of geostationary satellites needed for uninterrupted global coverage is : 4 2 3 1 4 2 3 1 ANSWER DOWNLOAD EXAMIANS APP
Physics Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighed in air (given that density of gold is greater than that of silver) Both silver and gold pieces weigh equal Weighing will depend on their masses The silver piece will weigh more The gold piece will weigh more Both silver and gold pieces weigh equal Weighing will depend on their masses The silver piece will weigh more The gold piece will weigh more ANSWER DOWNLOAD EXAMIANS APP
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