Physics The energy stored in a watch spring is Chemical energy Kinetic energy Heat energy Potential energy Chemical energy Kinetic energy Heat energy Potential energy ANSWER DOWNLOAD EXAMIANS APP
Physics Light houses are places with powerful lights to : Indicate to the incoming warships, the location of a harbour during night Guide and warn the ships coming from different directions in the ocean Guide and help large crowds at religious gathering during nights Guide and resolve traffic jams in crowded metro-cities during nights Indicate to the incoming warships, the location of a harbour during night Guide and warn the ships coming from different directions in the ocean Guide and help large crowds at religious gathering during nights Guide and resolve traffic jams in crowded metro-cities during nights ANSWER DOWNLOAD EXAMIANS APP
Physics Why does'nt the hydrogen atom emit X-rays? It is very small in size It has only one electron Its energy levels are very close to each other It is highly electropositive It is very small in size It has only one electron Its energy levels are very close to each other It is highly electropositive ANSWER DOWNLOAD EXAMIANS APP
Physics Magnetic keepers are used to protect magnets from : Earth's magnetic field Demagnetization due to heating Effect of other magnets Self-demagnetization Earth's magnetic field Demagnetization due to heating Effect of other magnets Self-demagnetization ANSWER DOWNLOAD EXAMIANS APP
Physics The type of mirrors used in the headlamp of cars is Cylindrical concave Spherical convex Plane Parabolic concave Cylindrical concave Spherical convex Plane Parabolic concave ANSWER DOWNLOAD EXAMIANS APP
Physics The focal length of a concave mirror with a radius of curvature of 20.0 cm is : 20 cm 10 cm 15 cm 5 cm 20 cm 10 cm 15 cm 5 cm ANSWER DOWNLOAD EXAMIANS APP
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