Physics What is refractive index ? It is defined as the product of speed of light in medium and in vacuum. It is defined as the ratio of speed of light in the medium to the speed of light in vacuum. It is defined as the ratio of speed of light in vacuum to the speed of light in the medium. None of above It is defined as the product of speed of light in medium and in vacuum. It is defined as the ratio of speed of light in the medium to the speed of light in vacuum. It is defined as the ratio of speed of light in vacuum to the speed of light in the medium. None of above ANSWER DOWNLOAD EXAMIANS APP
Physics Railway tracks are banked on curves so that No frictional force may be produced between the tracks and the wheels of the train Necessary centrifugal force may be obtained from the horizontal component of the weight of the train The train may not fall down inwards Necessary centripetal force may be obtained from the horizontal component of the weight of the train No frictional force may be produced between the tracks and the wheels of the train Necessary centrifugal force may be obtained from the horizontal component of the weight of the train The train may not fall down inwards Necessary centripetal force may be obtained from the horizontal component of the weight of the train ANSWER DOWNLOAD EXAMIANS APP
Physics A man jumping out of a moving train is thrown Backward None of these Sideways Forward Backward None of these Sideways Forward ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fibre works on which of the following principle of light? Total internal reflection Diffraction Refraction Reflection Total internal reflection Diffraction Refraction Reflection ANSWER DOWNLOAD EXAMIANS APP
Physics What is found in frequency modulation ? Fixed frequency Fixed dimension Change in frequency and dimension Change in dimension only Fixed frequency Fixed dimension Change in frequency and dimension Change in dimension only ANSWER DOWNLOAD EXAMIANS APP
Physics Which metal is the best conductor of heat? Gold Silver All of these Copper Gold Silver All of these Copper ANSWER DOWNLOAD EXAMIANS APP
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