Physics The force of friction between two surfaces will increase if: A layer of lubricant is kept between the two surfaces The two surfaces are pressed harder Air gap is created between the two surfaces Irregularities on both the surfaces are removed A layer of lubricant is kept between the two surfaces The two surfaces are pressed harder Air gap is created between the two surfaces Irregularities on both the surfaces are removed ANSWER DOWNLOAD EXAMIANS APP
Physics Rolling friction is caused by ________ Buoyancy Non-elastic effects Gravity Power dissipation Buoyancy Non-elastic effects Gravity Power dissipation ANSWER DOWNLOAD EXAMIANS APP
Physics In a railway track, two rails are joined end to end with a gap in between them because Steel can be saved Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided Accidents due to expansion in summer can be avoided Steel can be saved Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided Accidents due to expansion in summer can be avoided ANSWER DOWNLOAD EXAMIANS APP
Physics Air coolers are more suitable for Hot and dry climate Cool and humid climate Hot and humid climate Cool and dry climate Hot and dry climate Cool and humid climate Hot and humid climate Cool and dry climate ANSWER DOWNLOAD EXAMIANS APP
Physics We feel cool when we sit near the fan, this is because We feel cool when air touches the body. Fan gives cool air. Air vapourises the sweat on our body. Fan cools surrounding air. We feel cool when air touches the body. Fan gives cool air. Air vapourises the sweat on our body. Fan cools surrounding air. ANSWER DOWNLOAD EXAMIANS APP
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