Pins are fixed with the help of wax as shown in the following cases. In which order will the pins fall?
Question 13
In the arrangements A and B shown in Figure, pins P and Q are fixed to a metal loop and an iron rod with the help of wax. In which case are both the pins likely to fall at different times? Explain.
Question 12
A circular metal loop is heated at point O as shown in Figure. (i) In which direction would heat flow in the loop? (ii) In which order the pins at points P,Q and R fixed with the help of wax fall if points O, P, Q and R are equidistant from each other?
Question 20
Look at the figure. The length of wire PQ in case of A is equal to the diameter of the semicircle formed by the wire CDE, in case B. One pin is attached to each wire with the help of wax as shown in Figure. Which pin will fall first? Explain.