Physics A single fixed pulley is used to draw water from a well because Mechanical advantage is high Efficiency is 100% Velocity ratio is low Force is applied in a convenient direction Mechanical advantage is high Efficiency is 100% Velocity ratio is low Force is applied in a convenient direction ANSWER DOWNLOAD EXAMIANS APP
Physics The light rays used for eliminating bacteria X-rays Infrared rays Ultra-violet radiation Microwave radiation X-rays Infrared rays Ultra-violet radiation Microwave radiation ANSWER DOWNLOAD EXAMIANS APP
Physics Why does'nt the hydrogen atom emit X-rays? 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 It is very small in size It has only one electron Its energy levels are very close to each other ANSWER DOWNLOAD EXAMIANS APP
Physics Which is an example of Phototropism? Plant bending toward the light A venus flytrap capturing a fly Roots of a plant following water Roots growing into the soil Plant bending toward the light A venus flytrap capturing a fly Roots of a plant following water Roots growing into the soil ANSWER DOWNLOAD EXAMIANS APP
Physics If ice floating on water in a vessel melts, the water level in the vessel ________ . First increases before decreasing Increases Does not change Decreases First increases before decreasing Increases Does not change Decreases ANSWER DOWNLOAD EXAMIANS APP
Physics What device converts light energy to electrical energy? Heliostats Photovoltaic cell Thermocouple Photodiode Heliostats Photovoltaic cell Thermocouple Photodiode ANSWER DOWNLOAD EXAMIANS APP
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