Physics The force of friction between two surfaces will increase if: Irregularities on both the surfaces are removed The two surfaces are pressed harder Air gap is created between the two surfaces A layer of lubricant is kept between the two surfaces Irregularities on both the surfaces are removed The two surfaces are pressed harder Air gap is created between the two surfaces A layer of lubricant is kept between the two surfaces ANSWER DOWNLOAD EXAMIANS APP
Physics It is dangerous to observe Solar eclipse with naked eyes because Infrared radiations from sun burn our retina All radiations from sun initiate chemical reactions in eyes Ultraviolet radiations from Sun burn our retina Cosmic rays reach eyes more during the eclipse Infrared radiations from sun burn our retina All radiations from sun initiate chemical reactions in eyes Ultraviolet radiations from Sun burn our retina Cosmic rays reach eyes more during the eclipse ANSWER DOWNLOAD EXAMIANS APP
Physics What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space? 35 km/sec 18 km/sec 21 km/sec 11.2 km/sec 35 km/sec 18 km/sec 21 km/sec 11.2 km/sec ANSWER DOWNLOAD EXAMIANS APP
Physics Light travels fastest in Air Diamond Glass Water Air Diamond Glass Water ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is not reversible? Joule effect Peltier effect Thomson effect Seebeck effect Joule effect Peltier effect Thomson effect Seebeck effect ANSWER DOWNLOAD EXAMIANS APP
Physics When hot-water is sprinkled on a hotter glass tumbler, it breaks because Water evaporates Glass reacts chemically with water Glass suddenly expands Glass suddenly contracts Water evaporates Glass reacts chemically with water Glass suddenly expands Glass suddenly contracts ANSWER DOWNLOAD EXAMIANS APP
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