Physics A thin oil film on a water surface appears coloured because of Polarization Interference Diffraction Reflection Polarization Interference Diffraction Reflection ANSWER DOWNLOAD EXAMIANS APP
Physics The purpose of choke in a fluorescent lamp is : To increase the current flow Ro decrease the voltage momentarily To decrease the resistance To decrease the current flow To increase the current flow Ro decrease the voltage momentarily To decrease the resistance To decrease the current flow ANSWER DOWNLOAD EXAMIANS APP
Physics Thermohaline circulation is mainly due to Winds causing circulation of ocean water Cold, dense ocean water sinking and warmer water replacing it Warmer, less dense water sinking in the ocean and cold water replacing it Warm water being added to the ocean due to industial waste Winds causing circulation of ocean water Cold, dense ocean water sinking and warmer water replacing it Warmer, less dense water sinking in the ocean and cold water replacing it Warm water being added to the ocean due to industial waste ANSWER DOWNLOAD EXAMIANS APP
Physics Why does ice covered in sawdust not melt quickly ? Sawdust does not allow the air to touch the ice The water is absorbed by sawdust Sawdust is a bad conductor of heat Sawdust is good conductor of heat Sawdust does not allow the air to touch the ice The water is absorbed by sawdust Sawdust is a bad conductor of heat Sawdust is good conductor of heat ANSWER DOWNLOAD EXAMIANS APP
Physics Certain substances loose their electrical resistance completely at super low temperature. Such substances are called. Semi conductors Dielectrics Superconductors Perfect conductors Semi conductors Dielectrics Superconductors Perfect conductors ANSWER DOWNLOAD EXAMIANS APP
Physics In which one of the following the phenomenon of total internal reflection of light is used ? Formation of mirage Formation of rainbow Working of binoculars Twinkling of stars Formation of mirage Formation of rainbow Working of binoculars Twinkling of stars ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS