Physics In a railway track, two rails are joined end to end with a gap in between them because Accidents due to expansion in summer can be avoided Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided Steel can be saved Accidents due to expansion in summer can be avoided Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided Steel can be saved 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 The frequency of ultrasound wave is typically Below 02 kHz Above 20,000 kHz Below 20 kHz Above 20 kHz Below 02 kHz Above 20,000 kHz Below 20 kHz Above 20 kHz ANSWER DOWNLOAD EXAMIANS APP
Physics Which resource is both renewable and inexpensive? Gold Coal Minerals Sunlight Gold Coal Minerals Sunlight ANSWER DOWNLOAD EXAMIANS APP
Physics A passenger standing in a bus is thrown outward when the bus takes a sudden turn. This happens due to Change in momentum Outward pull on him Change in acceleration Inertia of motion Change in momentum Outward pull on him Change in acceleration Inertia of motion ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following properties is found only in ferromagnetic materials ? Point in a particular direction Attracting a magnetic substance Hysteresis Susceptibility independent of temperature Point in a particular direction Attracting a magnetic substance Hysteresis Susceptibility independent of temperature ANSWER DOWNLOAD EXAMIANS APP
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