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 ) 20 J 200J 40J 400J 20 J 200J 40J 400J ANSWER DOWNLOAD EXAMIANS APP
Physics Suppose voltage V is applied across a resistance R. The power dissipated in the resistance is P. Now the same voltage V is applied across a parallel combination of three equal resistors each of resistance R. Then the power dissipated in the second case will be 3P P P/3 2p/ 3 3P P P/3 2p/ 3 ANSWER DOWNLOAD EXAMIANS APP
Physics Hydraulic brakes in automobile work on Pascal's principle Bernoulli's principle Archimedes' principle Poiseuille's principle Pascal's principle Bernoulli's principle Archimedes' principle Poiseuille's principle ANSWER DOWNLOAD EXAMIANS APP
Physics An object of 10 kg is moving with a speed of 2 m/s. The kinetic energy of the object is 20 J 10 J 25 J 40 J 20 J 10 J 25 J 40 J ANSWER DOWNLOAD EXAMIANS APP
Physics Why is weightlessness experienced while orbiting the earth in space ships ? Zero gravity Acceleration Inertia None of these Zero gravity Acceleration Inertia None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Hot water is poured simultaneously in four metallic tumblers painted outside with different paints. After some time the water will be found to have cooled most in the tumbler painted. Shining black Rough black Shining white Rough white Shining black Rough black Shining white Rough white ANSWER DOWNLOAD EXAMIANS APP
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