Physics Outside of cooking utensils are generally left black from below because Black surface is a good absorber of heat. Black surface is a poor conductor of heat. It is difficult to clean daily. Black surface is a good conductor of heat. Black surface is a good absorber of heat. Black surface is a poor conductor of heat. It is difficult to clean daily. Black surface is a good conductor of heat. ANSWER DOWNLOAD EXAMIANS APP
Physics Why is it difficult to breathe at higher altitudes? Due to high humidity Due to low air pressure Due to ozone Due to low temperature Due to high humidity Due to low air pressure Due to ozone Due to low temperature ANSWER DOWNLOAD EXAMIANS APP
Physics Every hot object emits ________ Infrared rays X–rays Visible light Ultraviolet rays Infrared rays X–rays Visible light Ultraviolet rays ANSWER DOWNLOAD EXAMIANS APP
Physics Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes 2R 5R/4 R/2 3R/4 2R 5R/4 R/2 3R/4 ANSWER DOWNLOAD EXAMIANS APP
Physics Lightning heats the surrounding air to 300 deg Cent 300000 deg Cent 3000 deg Cent 30000 deg Cent 300 deg Cent 300000 deg Cent 3000 deg Cent 30000 deg Cent ANSWER DOWNLOAD EXAMIANS APP
Physics A ball rolling along the ground gradually slows down and finally comes to rest is due to ________ Electrostatic force Magnetic force Muscular force Friction Electrostatic force Magnetic force Muscular force Friction ANSWER DOWNLOAD EXAMIANS APP
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