Physics A solid needle placed horizontally on the surface of the water floats due to Capillary action Water pressure Surface tension of water Viscosity of water Capillary action Water pressure Surface tension of water Viscosity of water ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is the fastest communication channel? Radio wave Microwave Optical fiber All are operating at nearly the same propagation speed Radio wave Microwave Optical fiber All are operating at nearly the same propagation speed ANSWER DOWNLOAD EXAMIANS APP
Physics A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments Depends on the total mass of all the fragments Is zero Depends on the speeds of various fragments Is infinity Depends on the total mass of all the fragments Is zero Depends on the speeds of various fragments Is infinity ANSWER DOWNLOAD EXAMIANS APP
Physics Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to: Both the heating effect of current and hysteresis loss Hysteresis loss alone The heating effect of current alone Intense sunlight at noon Both the heating effect of current and hysteresis loss Hysteresis loss alone The heating effect of current alone Intense sunlight at noon ANSWER DOWNLOAD EXAMIANS APP
Physics Why does water tank appear shallower when viewed from the top? Due to total internal reflection Due to diffraction Due to refraction Due to reflection Due to total internal reflection Due to diffraction Due to refraction Due to reflection ANSWER DOWNLOAD EXAMIANS APP
Physics Rain drops fall from great height. Which among the following statements is true regarding it? They fall with that ultimate velocity, which are different for different droplets Their velocity increases and they fall with same velocity on the earth They fall with same ultimate velocity Their velocity increases and they fall with different velocity on the earth They fall with that ultimate velocity, which are different for different droplets Their velocity increases and they fall with same velocity on the earth They fall with same ultimate velocity Their velocity increases and they fall with different velocity on the earth ANSWER DOWNLOAD EXAMIANS APP
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