Four rods made of iron, wood, paper, and plastic are connected by a straight metallic rod, as shown in the given figure. The rods are heated by a hot filament placed near them. After sometime, it is observed that the temperature of the iron rod is more than that of the other three rods. Heat transfer whitin the rods takes place by
Two rods, one of iron and the other of aluminium, are heated to the same temperature. Then,
Four identical heat conductors are connected as shown in the figure. The temperature theta of the junction is [rods are insulated from the sides ]
Three rods of same material and of equal cross sectional area and length have been connected together as shown in the figure. The temperature of the junction of the rods approximately is
A metallic rod is bent in the form of ractangle as shown in the given figure and heated .Then the gap between the ends P and Q ______
A uniform rod of length L and mass m is free to rotate about a frictionless pivot at one end as shown in figure. The rod is held at rest in the horizontal position and a coin of mass m is placed at the free end. Now the rod is released The reaction on the coin immediately after the rod starts falling is
Three rods made of same material and having the same cross-section have been joined as shown. In the figure.Each rod is of the same length. The left and right ends are kept at 0^@C and 90^@C respectively. The temperature of the junction of the three rods will be
A light bulb and an inductor coil are connected to an ac source through a key as shown in figure below. The key is closed and after sometime an iron rod is inserted into interior of inductor. The glow of light bulb
Two similar rods are joined as shown in figure. Then temperature of junction is (assume no heat loss through lateral surface of rod and temperatures at the ends are shown in steady state )
