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 3R/4 2R R/2 5R/4 3R/4 2R R/2 5R/4 ANSWER DOWNLOAD EXAMIANS APP
Physics Find the resistance (in mega) of a wire of length 20m, cross sectional area 1 cm2 and made of a material of resistivity 200m. 4000 2000 80 40 4000 2000 80 40 ANSWER DOWNLOAD EXAMIANS APP
Physics If the temperature of a place increases suddenly, the relative humidity Decreases Fluctuates Remains constant Increases Decreases Fluctuates Remains constant Increases ANSWER DOWNLOAD EXAMIANS APP
Physics At low temperature, Lead behaves as a : Insulator Superconductor Semi conductor Conductor Insulator Superconductor Semi conductor Conductor ANSWER DOWNLOAD EXAMIANS APP
Physics A rear-view mirror for driving is Convex Concave Inverted Plain Convex Concave Inverted Plain ANSWER DOWNLOAD EXAMIANS APP
Physics Hertz is a unit for measuring Clarity of waves Intensity of waves Wavelength Frequency of waves Clarity of waves Intensity of waves Wavelength Frequency of waves ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS