A survey of 120 school students was done to find which activity they prefer to do in their free time. Draw a bar graph to illustrate the above data taking scale of 1 unit length = 5 students. Which activity is preferred by most of the students other than playing?

Number of persons in various age groups in a town is given in the following table. Draw a bar Draw a bar graph to represent the above information and answer the following questins. (take 1 unit lenght = 20 thousands) (a) Which two age groups have same population?

In annual day of a school, age-wise participation of students is shown in the following frequency distribution: Draw a 'less than type' ogive for the above data and from it find the median age.

The performance of a student in 1^(st) term and 2^(nd) term is given. Draw a double bar graph choosing appropriate scale and answer the following: In which sub ject, has the child improved his performance the most?

Total number of students of a school in different years is shown in the following table B Prepare another pictograph of students using any other symbol each representing 50 students. Which pictograph do you find more informative?

The Class X students of a secondary school in Krishinagar have been alloted a rectangular plot of land for their gardening activity . Sapling of Gul mohar is planted on the boundary at a disatnce of 1m from each other . There is a triangular grassy lawn in the plot as shown in the figure . The students are to sow seeds of flowering plants on the remaining area of the plot . (i) Taking A as origin , find the coordinates of the vertices of the triangle . (ii) What will be the coordinates of the vertices of Delta PQR if C is the origin Also calculate the areas of the triangles i these cases . What do you observe ?

Yamini and Fathina, two students of class IX of a school, together contributed Rs. 100 toewards the prime minister relief fund to help the earthquake victims. Write a linear equation which satisfies this data. (You may take their contribution as Rs. x and Rs. y) Draw the graph of the same.

Analyse the observation table which shows variation of image distance [v] with object distance [u] in the case of a convex lens. Answer the questions that follow without doing any calculations. {:("Sl.No","Object distance","Image distance"),(,"u [cm]","v [cm]"),(1,-90,+18),(2,-60,+20),(3,-30,+30),(4,-20,+60),(5,-18,+90),(6,-10,+100):} (a) What is the focal length of the convex lens ? Given reasons to support your answer. (b) Write the Sl.No of the observation which is not correct. How did you arrive at this conciusion ? (c ) Use an appropriate scale to draw the ray diagram for the observation at Sl. No 4 and find the approximate value of magnification.