Statement I: A liquid will flow faster and more smoothly from a sealed can when two holes are punched in the can than when one hole is punched.
Statement II: The flow becomes streamlined with two holes rather than with one hole.

Statement I : A brass disc just fits in a hole in a steel plate. The system must be cooled to loosen the disc from the hole. Statement II : The coefficient of linear expansion for brass is greater than the coefficient of linear expansion for steel.

Two holes are made in a sealed tin can to take out oil from it. Explain.

Statement-1: A brass disc is just fitted in a hole in a steel plate. The system mst be cooled to loosen the disc from the hole Statement-2: The coefficient of linear expansion for brass is greater than the coefficient of linear expansion for steel.

Statement I: The holes are created in the valence band only if the electrons from the valence band transit to the conduction band. Statement II: Due to applied electric field the hole in a semiconductor gains velocity which is less than that of a free electron.

A water tank standing on the floor has two small holes punched in the vertical wall one above the other. The holes are 2.4 cm and 7.6 cm above the floor. If the jest of water from the holes hit the floor at the same point, then the height of water in the tank is

Equal volumes of two immiscible liquids of densities rho and 2 rho are filled in a vessel as shown in figure. Two small holes are punched at depth h/2 and 3h/2 from the surface of lighter liquid. If v_(1) and v_(2) are the velocities of efflux at these two holes then ((v_(2))/(v_(1)))^(2) is

Equal volumes of two immiscible liquids of densities rho and 2 rho are filled in a vessel as shown in figure. Two small holes are punched at depth h/2 and 3h/2 from the surface of lighter liquid. If v_(1) and v_(2) are the velocities of efflux at these two holes then ((v_(2))/(v_(1)))^(2) is

Statement I : If the frequency of light below a certain minimum value is made incident on a photodiode , then no current will flow through it. Statement II : If the energy of incident photon is less than a minimum value then in a photodiode there is no possibility of recombination of electron-hole pairs.