Physics If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? Unchanged Depends upon the metal Decreases Increases Unchanged Depends upon the metal Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Physics What device converts light energy to electrical energy? Heliostats Photovoltaic cell Photodiode Thermocouple Heliostats Photovoltaic cell Photodiode Thermocouple ANSWER DOWNLOAD EXAMIANS APP
Physics If an object is thrown upwards, what will be its velocity, when it reaches its maximum height? 0 m/s 20 m/s 14.7 m/s 4.9 m/s 0 m/s 20 m/s 14.7 m/s 4.9 m/s ANSWER DOWNLOAD EXAMIANS APP
Physics Why does the sea appear blue in colour? Scattering of the sunlight by water molecules Interference of the sun light from water surface Refraction of the sun light Reflection of the sun light from water surface Scattering of the sunlight by water molecules Interference of the sun light from water surface Refraction of the sun light Reflection of the sun light from water surface ANSWER DOWNLOAD EXAMIANS APP
Physics Why does a cannon recoil after firing ? Newton's third law of motion Newton's first law of motion Conservation of energy Backward thrust of gases produced Newton's third law of motion Newton's first law of motion Conservation of energy Backward thrust of gases produced ANSWER DOWNLOAD EXAMIANS APP
Physics Solids which conduct electricity at higher temperature but not at lower temperature are called Super-conductor Insulator Semi-conductor Metallic-conductor Super-conductor Insulator Semi-conductor Metallic-conductor ANSWER DOWNLOAD EXAMIANS APP
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