Physics A small gap is left at the joints of rails in a railway track to Avoid the heating of tracks to high temperature Control the speed of train Keep the rails equidistant Avoid the tracks being distorted due to seasonal temperature variation Avoid the heating of tracks to high temperature Control the speed of train Keep the rails equidistant Avoid the tracks being distorted due to seasonal temperature variation ANSWER DOWNLOAD EXAMIANS APP
Physics The pitch of sound depends on its Frequency Intensity Amplitude Velocity Frequency Intensity Amplitude Velocity ANSWER DOWNLOAD EXAMIANS APP
Physics Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to: Intense sunlight at noon Hysteresis loss alone Both the heating effect of current and hysteresis loss The heating effect of current alone Intense sunlight at noon Hysteresis loss alone Both the heating effect of current and hysteresis loss The heating effect of current alone ANSWER DOWNLOAD EXAMIANS APP
Physics A soap bubble shows colours when illuminated with white light. This is due to Interference Diffraction Reflection Polarisation Interference Diffraction Reflection Polarisation ANSWER DOWNLOAD EXAMIANS APP
Physics Bolometer is used to measure Temperature Wavelength Frequency Velocity Temperature Wavelength Frequency Velocity ANSWER DOWNLOAD EXAMIANS APP
Physics The colour of the ocean appears to be blue because the sunlight falling on it is Scattered Reflected Diffracted Refracted Scattered Reflected Diffracted Refracted ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS