Physics If a copper wire is increased to double its length, its resistance will become Four times Double One–fourth Half Four times Double One–fourth Half ANSWER DOWNLOAD EXAMIANS APP
Physics Kirchhoff's laws are applicable to C. and A.C. circuits both None of these C. circuits only C. circuits only C. and A.C. circuits both None of these C. circuits only C. circuits only ANSWER DOWNLOAD EXAMIANS APP
Physics A mirage occurs because of Diffraction of light Interference of light Reflection by hot ground Total internal reflection by layers of air Diffraction of light Interference of light Reflection by hot ground Total internal reflection by layers of air ANSWER DOWNLOAD EXAMIANS APP
Physics Heat from the Sun reaches the Earth by Radiation Convection Conduction Reflection Radiation Convection Conduction Reflection 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. 2000 40 4000 80 2000 40 4000 80 ANSWER DOWNLOAD EXAMIANS APP
Physics Which metal is the best conductor of heat? All of these Copper Gold Silver All of these Copper Gold Silver ANSWER DOWNLOAD EXAMIANS APP
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