Physics In an optical fibre the signal is transmitted In a straight line path Due to refraction Due to total internal reflection In a curved path In a straight line path Due to refraction Due to total internal reflection In a curved path ANSWER DOWNLOAD EXAMIANS APP
Physics Lakes freeze in cold countries in winter, leaving the water underneath at 4°F 4°C 0°F 0°C 4°F 4°C 0°F 0°C 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 The earth is a Bad absorber and bad radiator of heat Good reflector of heat Non-absorber of heat Good absorber and good radiator of heat Bad absorber and bad radiator of heat Good reflector of heat Non-absorber of heat Good absorber and good radiator of heat ANSWER DOWNLOAD EXAMIANS APP
Physics If the temperature of a place increases suddenly, the relative humidity Decreases Fluctuates Remains constant Increases Decreases Fluctuates Remains constant Increases ANSWER DOWNLOAD EXAMIANS APP
Physics When light passes from one medium to another, this phenomenon of change in its direction is called ________ Propagation No option is correct Diffraction Refraction Propagation No option is correct Diffraction Refraction ANSWER DOWNLOAD EXAMIANS APP
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