Physics Red light has a wavelength of 70 A°. In "nm" it is 7 nm 700 nm 70 nm 0.07 nm 7 nm 700 nm 70 nm 0.07 nm ANSWER DOWNLOAD EXAMIANS APP
Physics On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : Plastics have a higher thermal conductivity than metals Metals are good conductors of heat Plastics have a lower density than metals Metals have higher thermal capacity than plastics Plastics have a higher thermal conductivity than metals Metals are good conductors of heat Plastics have a lower density than metals Metals have higher thermal capacity than plastics ANSWER DOWNLOAD EXAMIANS APP
Physics Metals are good conductors of electricity because: They have high melting point. They contain free electrons. The atoms are lightly packed. All of these They have high melting point. They contain free electrons. The atoms are lightly packed. All of these ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following has got more heat capacity ? Iron piece Benzene Water Gold piece Iron piece Benzene Water Gold piece ANSWER DOWNLOAD EXAMIANS APP
Physics What type of force acts on a car moving around a curve? Gravitational force Centrifugal force Cohesive force Centripetal force Gravitational force Centrifugal force Cohesive force Centripetal force ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is a device designed to protect electrical devices from voltage spikes? Voltage unloader Current unloader Heat protector Surge protector Voltage unloader Current unloader Heat protector Surge protector ANSWER DOWNLOAD EXAMIANS APP
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