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CBSE->Plus 1 Computer Science Questions

Total Questions 228
The sum of first q terms of an AP is is 63q-3q². If the p-th term is -60, find the value of p. Also find the 11th term of this AP.
The n-th term of an AP is 7-4n. Find its common difference.
The angle of elevation of the top of a tower as seen from a point on the ground is (say) ? such that tan ?= 3/4. From another point, 240 m away from this point on the line joining this point to the foot of the tower, the angle of elevation (say) 'a' of the top of the tower is such that tan 'a' = 5/12. Find the height of the tower.
The area of the incircle of an equilateral triangle is 154 square centimeter.What is the perimeter of the triangle? (Use ?3= 1.73)
What is difference between ‘/’ and ‘%’ operators in c++ ? Explain with a example.
Write a program in c++ to calculate the commission for the salesmen. The commission is calculated as follows. Sales Made Commission Rate 30001 onwards 15% 22001 to 30000 10% 12001 to 22000 7% 5001 to 12000 3% 0 to 5000 0%
What output will be the following code fragment produce? int val, res, n=1000; cin>>val; res = (n+val) >1750 ? 400 : 200; cout<<res; i) if the input is 2000 ii) if the input is 500
A hemispherical dome of a stupa needs to be painted. If the circumference of the base of the dome is 17.6 m, find the cost of painting it, given the rate of painting is rupees 5 per 100 square centimeter.
The diameter of a roller 120 cm long is 84 cm. If it takes 500 complete revolutions to level a playground, determine the cost of levelling it at the rate of 30 paise per square metre.
What is the radius of the largest circular cone that can be cut out from a cube of edge 4.2 cm?
The perimeter of a triangle is 30 cm and the circumference of its incircle is 88 cm. Then, what is the area of the triangle?
How to summarise the chapter hydrocarbons and what are the important points to be learnt to score good marks in it?
A chord of a circle of radius 15cm subtends an angle of 60° at the center. Find the areas of the corresponding minor and major segments of the circle.
If the radii of the ends of a bucket 45cm high are 28cm and 7cm, determine its capacity and surface area.
The height of the cone is 30cm. A small cone is cut off at the top by a plane parallel to the base. If its volume be 1/27 of the given cone, at what height above the base is the section made?
A cone is divided into two parts by drawing a plane through the midpoint of its axis, parallel to its base. Compare the volumes of two parts.
What is the importance of education in the modern day? Please describe about the Right to Education act of April 2010
Name the type of triangle PQR formed by the points P(?2,?2), Q(-?2,-?2), R(-?6,-?6)
Show that the points (1,7) (4,2), (-1,1) and (-4,4) are the vertices of a square.
Show that the points (-4,0), (4,0) and (0,3) are the vertices of an isosceles triangle.