Physics After long periods of use, a grey spot develops on the inside of a bulb. This is because The tungsten filament evaporates and collects there Glass undergoes a change due to the heat Dust inside the bulb condenses on the top The heat of the bulb scorches the glass at the top The tungsten filament evaporates and collects there Glass undergoes a change due to the heat Dust inside the bulb condenses on the top The heat of the bulb scorches the glass at the top ANSWER DOWNLOAD EXAMIANS APP
Physics Railway tracks are banked on curves so that 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 No frictional force may be produced between the tracks and the wheels of the train ANSWER DOWNLOAD EXAMIANS APP
Physics The purpose of choke in a fluorescent lamp is : To decrease the current flow To increase the current flow To decrease the resistance Ro decrease the voltage momentarily To decrease the current flow To increase the current flow To decrease the resistance Ro decrease the voltage momentarily ANSWER DOWNLOAD EXAMIANS APP
Physics The source of the Sun's energy is the process of Thermionic emission Nuclear fission Photoelectric emission Nuclear fusion Thermionic emission Nuclear fission Photoelectric emission Nuclear fusion ANSWER DOWNLOAD EXAMIANS APP
Physics The earth is a Good absorber and good radiator of heat Good reflector of heat Bad absorber and bad radiator of heat Non-absorber of heat Good absorber and good radiator of heat Good reflector of heat Bad absorber and bad radiator of heat Non-absorber of heat ANSWER DOWNLOAD EXAMIANS APP
Physics The magnifying power of an astronomical telescope can be decreased by Increasing the focal length of the objective None of these Decreasing the focal length of the eyepiece Increasing the focal length of the eyepiece Increasing the focal length of the objective None of these Decreasing the focal length of the eyepiece Increasing the focal length of the eyepiece ANSWER DOWNLOAD EXAMIANS APP
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