English

ہوم / مشق / مخروطی تراشے / ورک شیٹ

آن لائن مشق کریں

مخروطی تراشے

بارہویں جماعت · ریاضی · 5 سوالات

نام: ____________________   تاریخ: ____________

  1. The equation x2 + y2 = 25 represents a circle of radius:

    • A 50
    • B 25
    • C 12.5
    • D 5

  2. The focus of the parabola y2 = 4x is at:

    • A (2, 0)
    • B (1, 0)
    • C (4, 0)
    • D (0, 1)

  3. The eccentricity of a parabola is:

    • A Greater than 1
    • B 0
    • C 1
    • D Less than 1

  4. The centre of the circle (x - 2)2 + (y + 3)2 = 16 is:

    • A (-2, -3)
    • B (2, -3)
    • C (-2, 3)
    • D (2, 3)

  5. The eccentricity of an ellipse is:

    • A Less than 1
    • B Equal to 1
    • C Greater than 1
    • D Zero always

جوابی کلید

1. D, 2. B, 3. C, 4. B, 5. A

  1. r2 = 25, so r = 5.

  2. For y2 = 4ax the focus is (a, 0), with a = 1.

  3. A parabola has e = 1.

  4. The centre is (h, k) in (x - h)2 + (y - k)2 = r2.

  5. Ellipses have 0 < e < 1.