Two semiconductor materials X and Y shown in the given figure, are made by doping germanium crystal with indum and arsenic respectively. The two are joined end to end and connected to a battery as shown.
(i). Will the junction be forward biased or reverse biased.?
(ii). Sketch a V-I graph for this arrangement.

A semiconductor material x is made by doping a germanium crystal with indium another semiconductor material y is made by doping a x nad y ar then joined together and connected to a battery will the jucntion be forward or reverse biased also draw the V-I characteristics for the circuit

A semiconductor X is made by dopping a germanium crystal with arsenic (Z=33) . A scond semiconductor Y is made by dopping germanium with indium (Z=49) . The two are joined end to end and connected to a battery as shown. Which of the following statements is correct?

V-I graphs for a material is shown in the figure. The graphs are drawn at two different temperatures.

Two rods of same material and thickness are joined as shown below. The ends X and Y are maintained at X^(@)C and Y^(@)C respectively. The ratio of the heat flow in the two rods is –

Two wires of the same material (Young's modulus=Y) and same length L but radii R and 2R respectively are joined end to end and a weight w is suspended from the combination as shown in the figure. The elastic potential energy in the system is

Two sphere S_(1)andS_(2) made of the same material and having radii 2r and r, respectively, are immersed in water and suspended from either end of a beam as shown in figure. The beam is in equilibrium when x:y=1:3 Determine the density of the object.

Two rods of material, x and two of y are connected as shown in the figure. All the rods are indentical in length and cross-sectional area. If the end A is maintained at 80^(@)C and the end D is maintained at 10^(@)C , calculate the temperature of the junctions B and C in the steady state. Thermal conductivity of x is double that of y .