New ! Maths MCQ Practise Tests



Ordinary Differential Equations Model Question Paper 1

12th Standard

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Maths

Time : 01:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. The order of the differential equation of all circles with centre at (h, k ) and radius ‘a’ is

    (a)

    2

    (b)

    3

    (c)

    4

    (d)

    1

  2. The solution of the differential equation \(2x\frac{dy}{dx}-y=3\) represents

    (a)

    straight lines

    (b)

    circles

    (c)

    parabola

    (d)

    ellipse

  3. If p and q are the order and degree of the differential equation \(y=\frac { dy }{ dx } +{ x }^{ 3 }\left( \frac { { d }^{ 2 }y }{ { dx }^{ 2 } } \right) +xy=cosx,\) When

    (a)

    p < q

    (b)

    p = q

    (c)

    p > q

    (d)

    p exists and q does not exist

  4. The solution of sec2x tan y dx + sec2y tan x dy = 0 is _________

    (a)

    tan x+tan y = c

    (b)

    sec x + sec y = c

    (c)

    tan x tan y = c

    (d)

    sec x- sec y = c

  5. The solution of (x- ay)dx = (ax - y2)dy is ___________

    (a)

    y = x2+y2-a(x+y)

    (b)

    y = x2+y2-a(x+y)

    (c)

    x3+y= 3ayx+c

    (d)

    (x2-ay)(ax-y2) = 0

  6. 5 x 2 = 10
  7. For each of the following differential equations, determine its order, degree (if exists)
    \(\sqrt { \frac { dy }{ dx } } -4\frac { dy }{ dx } -7x=0\)

  8. For each of the following differential equations, determine its order, degree (if exists)
    \(y\left( \frac { dy }{ dx } \right) =\frac { x }{ \left( \frac { dy }{ dx } \right) +{ \left( \frac { dy }{ dx } \right) }^{ 3 } } \)

  9. Form the differential equation satisfied by are the straight lines in my-plane.

  10. Solve: \(\frac{dy}{dx}=1+e^{x-y}\)

  11. Solve: \(\frac{dy}{dx}+y=e^{-x}\)

  12. 5 x 3 = 15
  13. Express each of the following physical statements in the form of differential equation.
    A saving amount pays 8% interest per year, compounded continuously. In addition, the income from another investment is credited to the amount continuously at the rate of Rs. 400 per year.

  14. Find the differential equation of the family of all non-vertical lines in a plane.

  15. Find the differential equation of the family of circles passing through the points (a, 0) and (−a, 0).

  16. Form the differential equation for y = e-2x [A cos 3x-B sin 3x]

  17. Solve: \(\frac{dy}{dx}+y=cos x\)

  18. 4 x 5 = 20
  19. Solve \(\frac { dy }{ dx } =\frac { x-y+5 }{ 2(x-y)+7 } .\)

  20. Solve:\(\frac { dy }{ dx } \) = (3x+y+4)2.

  21. The surface area of a balloon being inflated changes at a constant rate. If initially, its radius 3 units and after 2 seconds it is 5 units, find the radius after t seconds.

  22. Solve: \(\frac { dy }{ dx } \) = (3x+2y+1)2

*****************************************

Reviews & Comments about 12th Maths - Ordinary Differential Equations Model Question Paper 1

Write your Comment