Physics Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre? 12.33 diopters -4.33 diopters 4.33 diopters -12.33 diopters 12.33 diopters -4.33 diopters 4.33 diopters -12.33 diopters ANSWER DOWNLOAD EXAMIANS APP
Physics Where should a boat compass be mounted? Away from electrical wiring All listed here Near iron Near magnet Away from electrical wiring All listed here Near iron Near magnet ANSWER DOWNLOAD EXAMIANS APP
Physics Which is a common first indicator of an approaching thunderstorm? A buildup of dark clouds Too hot Lightning Heavy wind A buildup of dark clouds Too hot Lightning Heavy wind ANSWER DOWNLOAD EXAMIANS APP
Physics Suitable impurities are added to a semiconductor depending on its use. This is done in order to increase its electrical resistivity increase its electrical conductivity increase its life enable it to withstand higher voltages increase its electrical resistivity increase its electrical conductivity increase its life enable it to withstand higher voltages ANSWER DOWNLOAD EXAMIANS APP
Physics A gas thermometer is more sensitive than a liquid thermometer because a gas : Is easy to obtain Expands more than a liquid Does not change state easily Is lighter than liquid Is easy to obtain Expands more than a liquid Does not change state easily Is lighter than liquid 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: The heating effect of current alone Hysteresis loss alone Both the heating effect of current and hysteresis loss Intense sunlight at noon The heating effect of current alone Hysteresis loss alone Both the heating effect of current and hysteresis loss Intense sunlight at noon ANSWER DOWNLOAD EXAMIANS APP
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