Physics Copper wires are generally used for electrical power transmission instead of iron wire because : Copper is lighter than iron Copper is a better conductor of electricity than iron Copper can take higher power than iron Copper is cheaper than iron Copper is lighter than iron Copper is a better conductor of electricity than iron Copper can take higher power than iron Copper is cheaper than iron ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following experiments analyzed the Fraunhofer lines of the solar spectrum? Bunsen and Kirchhoff's experiment Lamb-Rutherford experiment Geiger and Marsdens experiment on scattering of alpha particles Barkla's experiment on scattering of X-rays Bunsen and Kirchhoff's experiment Lamb-Rutherford experiment Geiger and Marsdens experiment on scattering of alpha particles Barkla's experiment on scattering of X-rays ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is correct about the properties of Gravitational Forces? They observe inverse square law They are the strongest forces in nature Both a and b None They observe inverse square law They are the strongest forces in nature Both a and b None ANSWER DOWNLOAD EXAMIANS APP
Physics According to special theory of relativity the mass of a particle Decreases with decrease in velocity. Decreases with increase in velocity. Is independent of its velocity. Increases with increase in velocity with respect to an observer. Decreases with decrease in velocity. Decreases with increase in velocity. Is independent of its velocity. Increases with increase in velocity with respect to an observer. ANSWER DOWNLOAD EXAMIANS APP
Physics The unit of noise pollution (level) is : Ppm Decimal Decibel None of these Ppm Decimal Decibel None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Pipelines in cold countries often burst in winter, because Water freezes and expands in its volume Pipelines expand due to freezing Pipelines contract in their volume Temperature of ice is less than that of water Water freezes and expands in its volume Pipelines expand due to freezing Pipelines contract in their volume Temperature of ice is less than that of water ANSWER DOWNLOAD EXAMIANS APP
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