Physics The base of an electric iron is brightly polished mainly To make it rust-proof To make it smooth and frictionless To reduce heat loss by radiation To make it more durable To make it rust-proof To make it smooth and frictionless To reduce heat loss by radiation To make it more durable ANSWER DOWNLOAD EXAMIANS APP
Physics The metal used to make lightning conductors is Zinc Aluminium Copper Iron Zinc Aluminium Copper Iron ANSWER DOWNLOAD EXAMIANS APP
Physics Echo is heard due to Interference Reflection Scattering Refraction Interference Reflection Scattering Refraction ANSWER DOWNLOAD EXAMIANS APP
Physics Conservation of energy refers to the fact that No chemical reaction is 100 percent efficient If you conserve energy you will not be as tired Energy cannot be created or destroyed but can be converted from one form to another The entropy of the universe is always increasing No chemical reaction is 100 percent efficient If you conserve energy you will not be as tired Energy cannot be created or destroyed but can be converted from one form to another The entropy of the universe is always increasing ANSWER DOWNLOAD EXAMIANS APP
Physics In order to make an electromagnet you need a Dry cell batteries Thin coated copper wire Iron nail All of these Dry cell batteries Thin coated copper wire Iron nail All of these ANSWER DOWNLOAD EXAMIANS APP
Physics A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf's is : 0.20902777777778 0.12777777777778 0.12638888888889 0.21111111111111 0.20902777777778 0.12777777777778 0.12638888888889 0.21111111111111 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS