Two identical solid balls, one of ivory and the other of wet-clay, are dropped form the same height on the flor. Which one will rise to a greater height after striking the floor and why?

Two balls of different masses (one lighter and other heavier) are thrown vertically upward with same initial speed. Which one will rise to the greater height)?

Two spherical bobs, one metallic and the other of glass, of the same size are allowed to fall freely from the same height above the ground. Which of the two would reach earlier and why?

Two wires of equal lengths, one of copper and the other of manganin, have the same resistance. Which wire is thicker?

Two wires of equal lengths, one of copper and the other of manganin, have the same resistance. Which wire is thicker?

Two wires of equal length, one of copper and the other of manganin have the same thickness. Which one will be used for its electrical heating devices? Why?

Two wires of equal length, one of copper and the other of manganin have the same thickness. Which one will be used for its electrical transmission lines?

Two masses m and 2m are dropped from height h and 2h. On reaching the ground, which will have a greater kinetic energy and why ?

Two heating coils, one of fine wire and the other of thick wire of the same material and of the same length are connected in series and in parallel. Which of the following statement is correct ?

Two identical loops, one of copper and other of aluminium are rotated with the same speed in the same magnetic field. In which case the induced emf and induced current will be more? Why?