MULTIPLE CHOICE QUESTIONS

In Figure, two boys $\mathrm{A}$ and $\mathrm{B}$ are shown applying force on a block. If the block moves towards the right, which one of the following statements is correct?
      

In the circuit shown in the figure, when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of the hammer?

During dry weather, while combing hair, sometimes we experience hair flying apart. The force responsible for this is:

Figure shows a container filled with water. Which of the following statements is correct about pressure of water?

Two objects repel each other. This repulsion could be due to 

Which one of the following forces is a contact force?

A water tank has four taps fixed at points $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}$ as shown in Figure. The water will flow out at the same pressure from taps at

A brick is kept in three different ways on a table as shown in figure. The pressure exerted by the brick on the table will be