Physics A parallel-plate capacitor,with air in between the plates, has capacitance C. Now the space between the two plates of the capacitor is filled with a dielectric of dielectric constant 7. Then the value of the capacitance will become C/7 C 7C 14C C/7 C 7C 14C ANSWER DOWNLOAD EXAMIANS APP
Physics A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf's is : 0.21111111111111 0.12777777777778 0.20902777777778 0.12638888888889 0.21111111111111 0.12777777777778 0.20902777777778 0.12638888888889 ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fibre works on which of the following principle of light? Reflection Refraction Diffraction Total internal reflection Reflection Refraction Diffraction Total internal reflection ANSWER DOWNLOAD EXAMIANS APP
Physics A person lifts luggage of 20 kg from the ground and puts it on his head 2m above the ground. Calculate the work done by him. (g = 10 ) 400J 40J 200J 20 J 400J 40J 200J 20 J ANSWER DOWNLOAD EXAMIANS APP
Physics Acceleration is the rate of change of Speed Velocity Jounce Jerk Speed Velocity Jounce Jerk ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is the fastest communication channel? Radio wave Microwave All are operating at nearly the same propagation speed Optical fiber Radio wave Microwave All are operating at nearly the same propagation speed Optical fiber ANSWER DOWNLOAD EXAMIANS APP
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