Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighed in air (given that density of gold is greater than that of silver)
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
Two radioactive sources A and B initially contain equal number of radioactive atoms. Source A has a half life of 1 h and source B 2 h. At the end of 2 h, the ratio of the rate of disintegration of A to that of B will be
Two resistances of 100 ohms and 0 ohm are connected in parallel. The overall resistance will be
Two rods, one of copper and other of steel, experience the same up thrust when placed in water. Thus, both have
Two stones of different masses are dropped simultaneously from the top of a building
Two stones of unequal masses are thrown vertically up with the same velocity. Which among the given will happen
Two wires have their lengths, diameters and resistivities all in the ratio of 1:2. If the resistance of the thiner wire is 10 W, then the resistance of the thicker wire is
Two wires of equal length A and B which differ only in thickness. A is thinner than B if both are lifted with the same force, then?
Ultrasonic waves are used for stirring liquid solutions because they
