Physics To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor Should be made of a good conductor but can be of any shape Can be of any shape Should be made of a good conductor like copper with sharp-pointed edges Should be in the form of a vertical rod Should be made of a good conductor but can be of any shape Can be of any shape Should be made of a good conductor like copper with sharp-pointed edges Should be in the form of a vertical rod ANSWER DOWNLOAD EXAMIANS APP
Physics Which sources produce alternating current (AC)? Solar power plants Hydro-electric generators All of these Batteries Solar power plants Hydro-electric generators All of these Batteries ANSWER DOWNLOAD EXAMIANS APP
Physics A water tank appears shallower when it is viewed from top due to Total internal reflection Rectilinear propagation of light Refraction Reflection Total internal reflection Rectilinear propagation of light Refraction Reflection ANSWER DOWNLOAD EXAMIANS APP
Physics What is the minimum distance (in metres) required to hear an echo? 17 10 13 21 17 10 13 21 ANSWER DOWNLOAD EXAMIANS APP
Physics Solids which conduct electricity at higher temperature but not at lower temperature are called Semi-conductor Metallic-conductor Super-conductor Insulator Semi-conductor Metallic-conductor Super-conductor Insulator ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following group of elements are diamagnetic? Oxygen, copper, silver Hydrogen, oxygen, Argon Argon, copper, silver Hydrogen, argon, copper Oxygen, copper, silver Hydrogen, oxygen, Argon Argon, copper, silver Hydrogen, argon, copper ANSWER DOWNLOAD EXAMIANS APP
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