Physics In a railway track, two rails are joined end to end with a gap in between them because Steel can be saved Accidents due to contraction in winter can be avoided Air-gaps are necessary for bearing the weight of running train Accidents due to expansion in summer can be avoided Steel can be saved Accidents due to contraction in winter can be avoided Air-gaps are necessary for bearing the weight of running train Accidents due to expansion in summer can be avoided ANSWER DOWNLOAD EXAMIANS APP
Physics Isotopes of an element contain equal number of nucleons the same number of neutrons but different number of protons equal number of protons and electrons the same number of protons but different number of neutrons equal number of nucleons the same number of neutrons but different number of protons equal number of protons and electrons the same number of protons but different number of neutrons ANSWER DOWNLOAD EXAMIANS APP
Physics Burns caused by steam are much severe than those caused by boiling water because Steam is gas and engulfs the body quickly Temperature of steam is higher Steam has latent heat Steam pierces through the pores of body quickly Steam is gas and engulfs the body quickly Temperature of steam is higher Steam has latent heat Steam pierces through the pores of body quickly ANSWER DOWNLOAD EXAMIANS APP
Physics A needle or a pin floats on the surface of water because of Adhesive force Viscosity Surface tension Surface energy Adhesive force Viscosity Surface tension Surface energy ANSWER DOWNLOAD EXAMIANS APP
Physics If a body moves with a constant speed in a circle No force acts on it No acceleration is produced in it Its velocity remains constant No work is done on it No force acts on it No acceleration is produced in it Its velocity remains constant No work is done on it ANSWER DOWNLOAD EXAMIANS APP
Physics Holography is a technique of Recording a permanent three dimensional photograph of a given single colour or a multicolour Recording a permanent three dimensional black and white photograph Recording a permanent, sharp two diimensional black and white or multicolour photograph Recording a permanent three dimensional multicolour photograph Recording a permanent three dimensional photograph of a given single colour or a multicolour Recording a permanent three dimensional black and white photograph Recording a permanent, sharp two diimensional black and white or multicolour photograph Recording a permanent three dimensional multicolour photograph ANSWER DOWNLOAD EXAMIANS APP
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