Simon made a long rod by attaching two rods P and Q, each made of a different
metal. He stuck eight identical iron blocks on the long rod at equal intervals, using
the same amount of wax. He lit a candle and placed it at its centre. The setup is
shown below.
Which of the options indicates that the rate of heat conduction of rod P is higher
than that of rod Q? (Note: The number on the blocks in the images below represent
the order in which the blocks fall. For example, 1 means that block fell off first.)
