Physics Why do birds not have respiratory trouble at the time of flying at high altitude ? They use less oxygen Their lungs are very large They fly inactively They have extra air sacs They use less oxygen Their lungs are very large They fly inactively They have extra air sacs ANSWER DOWNLOAD EXAMIANS APP
Physics A copper disc has a hole. If the disc is heated, the size of the hole First increases and than decreases Increases No change Decreases First increases and than decreases Increases No change Decreases ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fibres are based on the phenomenon of Total Internal Reflection Dispersion Diffraction Interference Total Internal Reflection Dispersion Diffraction Interference ANSWER DOWNLOAD EXAMIANS APP
Physics Propagation of sound can be visualised as propagation of ________ variations in the medium Viscosity Elasticity Porosity Density Viscosity Elasticity Porosity Density ANSWER DOWNLOAD EXAMIANS APP
Physics Transition ions absorb light in : Ultraviolet region Infrared region Microwave region Visible region Ultraviolet region Infrared region Microwave region Visible region ANSWER DOWNLOAD EXAMIANS APP
Physics A cyclist leans inwards when he is negotiating a curve so that Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion. He may increase his speed His weight may be reduced No frictional force may be produced between the wheels and the axle Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion. He may increase his speed His weight may be reduced No frictional force may be produced between the wheels and the axle ANSWER DOWNLOAD EXAMIANS APP
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