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 3R/4 5R/4 R/2 2R 3R/4 5R/4 R/2 ANSWER DOWNLOAD EXAMIANS APP
Physics When a bottle of scent is kept open in a corner of a room its odour is felt in all parts of the room. This is due to the phenomenon of : Diffusion Vaporisation Evaporation Sublimation Diffusion Vaporisation Evaporation Sublimation ANSWER DOWNLOAD EXAMIANS APP
Physics What type of simple machine is an axe? Lever The screw Wedge Both A & B Lever The screw Wedge Both A & B ANSWER DOWNLOAD EXAMIANS APP
Physics Acceptable noise level for human ear None of these > 85 db < 85 db = 85 db None of these > 85 db < 85 db = 85 db ANSWER DOWNLOAD EXAMIANS APP
Physics A galvanometer can be converted into a voltmeter by connecting with it a Low resistance in series Low resistance on parallel High resistance on series High resistance in parallel Low resistance in series Low resistance on parallel High resistance on series High resistance in parallel ANSWER DOWNLOAD EXAMIANS APP
Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Prevent cold waves from the sky descending on earth Absorb heat from the atmosphere send it towards earth Reflect back the heat given by earth Produce heat and radiate it toward earth Prevent cold waves from the sky descending on earth Absorb heat from the atmosphere send it towards earth Reflect back the heat given by earth Produce heat and radiate it toward earth ANSWER DOWNLOAD EXAMIANS APP
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