Q321.The conic, whose focus is pole and directrix is 2 π θ = θ = is a–
Correct answer: parabola
Q322.The radius of the circle passing through the point (6,2) two of whose diameters are x + y = 6 and x + 2y = 4, is–
Correct answer: 2 5
Q323.The eccentricity of an ellipse whose pair of conjugate diameters are y = x and 3y = –2x is–
Correct answer: 1/3
Q324.The angle between the tangents drawn from the point (–2, 0) to the parabola y2 = 4 (x + 1) is–
Correct answer: 2
Q325.The locus of the point of intersection of perpendicular tangents to a parabola is a–
Correct answer: parabola
Q326.A square is formed by the two pairs of straight lines 2 x 8x 12 0, 2 y 14y 45 0 circle is inscribed in it. The centre of the circle is–
Correct answer: (4,7)
EnglishUP PCS (Pre) 2008 (G.I.C.) Lecturer Exam, 2015
Q327.The maximum number of normal that can be drawn from any point to a parabola is
Correct answer: three
Q328.If the normal at one end of a latusrectum of an ellipse passes through one extremity of the minor axis, then that eccentricity e is given by the equation
Correct answer: e4 +e2 -1= 0
Q329.If h2 = ab then the angle between the lines ax2 +2 hxy+by2 = 0 is
Correct answer: 0°
Q330.If 60° ° ° be the angle between the asymptotes of a hyperbola, then its eccentricity is
Correct answer: 2/3
Q331.If the sum of the distances of a point from two perpendicular lines in a plane is 1, then the locus of the point is
Correct answer: a straight line
Q332.The intersection of x = t2, y = t2 (t real) and x2 +y2 = 8, is
Correct answer: (2, 2)
Q333.The normal at the point (1, 1) on the curve 2y = 3–x2 is
Correct answer: x – y = 0
Q334.The figure formed by all the asymptotes of the curve x2 y2 = c2 (x2 + y2) is a
Correct answer: square
Q335.The curve (x – 2)2 = y (y – 1)2 at the point (2, 1) has
Correct answer: a node
English(GIC) Lecturer Exam, 2015
Q336.Angle between the lines represented by x2 –xy–
Correct answer: tan–1/(–3)
English(GIC) Lecturer Exam, 2015
Q337.The lines 3x–4y+4=0 and 6x–8y–7=0 are tangents to the same circle. The radius of the circle is
Correct answer: 3/4
English(GIC) Lecturer Exam, 2015
Q338.The number of values of m for which the line y–1=m(x–1) cuts the circle x2 +y2 =4 at two real points, is
Correct answer: Infinite
English(GIC) Lecturer Exam, 2015
Q339.The number of common tangents that can be drawn to the circles x2 +y2 –4x–6y–3 = 0 and x2 +y2 –2x–2y+1 = 0 is equal to
Correct answer: 3
English(GIC) Lecturer Exam, 2015
Q340.The angle made by the double ordinate of length 8 at the vertex of the parabola y2 =4x is equal to
Correct answer: π/2