Directions for the following 3 (three) items: (Covers Questions 31 to 34)
Read the passage given below study the graph that follows and answer the three items given below the figure
During a party, a person was exposed to contaminated water. A few days later, he developed fever and loose motions. He suffered for some days before going to a doctor for treatment. On starting the treatment, he soon become battery and recovered completely a few days later. The following graph shows different phases of the person's disease condition as regions A, B, C, D and E of the curve. 
Which region/regions of the curve correspond/corresponds to incubation phase of the infection?
A only
B only
B and C
No part of the curve indicates the incubation phase
Consider the figure given below and answer the item that follows:
In the figure shown above, OP1 and OP2 are two plane mirrors kept perpendicular to each other. S is the direction of a beam of light falling on the mirror OP1. The direction of the reflected beam of light from the mirror OP2 will be
Perpendicular to the direction S.
At 45o to the direction S
Opposite and parallel to the direction S.
At 60o to the direction S.
Consider the following figure and answer the item that follows: 
What is the minimum number of different colours required to paint the figure given above such that no two adjacent regions have the same colour?
Consider the following figure and answer the item that follows: 
A square is divided into four rectangles as shown above. The lengths of the sides of rectangles are natural numbers. The areas of two rectangles are indicated in the figure. What is the length of each side of the square?
10
11
15
Cannot be determined as the given data are insufficient
