Figure 13.10 shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following questions:
(a) At which point/s (A, B or C) in the curve is light a limiting factor?
(b) What could be the limiting factor/s in region A?
(c) What do C and D represent on the curve?

The distance-time graph of three objects A, B and C is shown below. Study the graph and answer the following questions : : Distance-time graph) (a) Which of the three is travelling the fastest? (b) Are all three ever at the same point on the road ? (c) How far has travelled when B passes A? (d) How far has B travelled by the time it passes C?

A graph of speed to time for a motin of a train is given. Study it and answer the following question . (1) Which type of motion would be from point 0 to A ? (2) Which type of motion does AB show ? (3) Find the retardation for the motion form point b to C .

Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following: (a) What is the final pressure of the gas in A and B ? (b) What is the change in internal energy of the gas ? (c) What is the change in the temperature of the gas ? (d) Do the intermediate states of the system (before settling to the final equilibrium state) lie on its P-V-T surface ?

Following figure shows P-T graph for four processes A, B, C and D. Select the correct alternative