KVPY (Kishore Vaigyanik Protsahan Yojana) StreamSA (Class 11) Math: Questions 15  18 of 265
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Question number: 15
» Coordinate Geometry » Section Formula
Appeared in Year: 2011
Question
A piece of paper in the shape of a sector of a circle (see Fig. 1) is rolled up to form a rightcircular cone (see Fig. 2). The value of the angle is?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 16
» Complex Numbers and Quadratic Equations » Quadratic Equations in Real and Complex Number System
Appeared in Year: 2011
Question
Let a, b, c, d be real numbers such that . Then the sum of all possible values of is,
Choices
Choice (4)  Response  

a.  18 

b.  24 

c.  9 

d.  30 

Question number: 17
» Sets, Relations and Functions » Equivalence Relations
Question
Below are four equations in x. Assume that 0 < r < 4. Which of the following has the largest solution for x?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 18
» Coordinate Geometry » Conic Sections
Question
The diameter of one of the bases of a truncated cone is 400 mm. If the diameter of this base is increased by 25 % such that it still remains a truncated cone with the height and the other base unchanged, the volume also increases by 25%. The radius of the other base (in mm) is
Choices
Choice (4)  Response  

a.  90 

b.  80 

c.  100 

d.  70 
