Physics A small gap is left at the joints of rails in a railway track to Avoid the tracks being distorted due to seasonal temperature variation Control the speed of train Keep the rails equidistant Avoid the heating of tracks to high temperature Avoid the tracks being distorted due to seasonal temperature variation Control the speed of train Keep the rails equidistant Avoid the heating of tracks to high temperature ANSWER DOWNLOAD EXAMIANS APP
Physics On a rainy day, small oil films on water show brilliant colours. This is due to dispersion interference diffraction polarization dispersion interference diffraction polarization ANSWER DOWNLOAD EXAMIANS APP
Physics Eclipses occur due to which optical phenomena? Reflection Diffraction Refraction Rectilinear propagation Reflection Diffraction Refraction Rectilinear propagation ANSWER DOWNLOAD EXAMIANS APP
Physics The wave like properties of electrons are useful in All of these Weather reports Magnifying objects Lasers All of these Weather reports Magnifying objects Lasers ANSWER DOWNLOAD EXAMIANS APP
Physics Two vectors are said to be equal if Only their directions are same Both magnitude and direction are same Magnitudes are same but directions are opposite Only their magnitudes are same Only their directions are same Both magnitude and direction are same Magnitudes are same but directions are opposite Only their magnitudes are same ANSWER DOWNLOAD EXAMIANS APP
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