Term 1 Model Question Paper

11th Standard

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Physics

Time : 01:42:00 Hrs
Total Marks : 60
    5 x 1 = 5
  1. If the error in the measurement of radius is 2%, then the error in the determination of volume of the sphere will be 

    (a)

    8%

    (b)

    2%

    (c)

    4%

    (d)

    6%

  2. If a particle has negative velocity and negative acceleration, its speed

    (a)

    increases

    (b)

    decreases

    (c)

    remains same

    (d)

    zero

  3. Two masses m1 and m2 are experiencing the same force where m1 < m2.The ration of their acceleration \(\frac { { a }_{ 1 } }{ { a }_{ 2 } } \)is

    (a)

    1

    (b)

    less than 1

    (c)

    greater than 1

    (d)

    all the three cases

  4. If the linear momentum of the object is increased by 0.1% then the kinetic energy is Increased by

    (a)

    0.1 %

    (b)

    0.2 %

    (c)

    0.4 %

    (d)

    0.01 %

  5. The ratio of the acceleration for a solid sphere (mass m and radius R) rolling down an incline of angle \(\theta\) without slipping and slipping down the incline without rolling is,

    (a)

    5 : 7

    (b)

    2: 3

    (c)

    2: 5

    (d)

    7: 5

  6. 8 x 2 = 16
  7. Why dimensional methods are applicable only up to three quantities?

  8. What is meant by Range of time scales.

  9. State the number of significant figures in the following 600800

  10. Convert the vector \(\vec { r } =3\hat { i } +2\hat { j } \) into a unit vector.

  11. Compare the components of vector equation \(\vec F_1+\vec F_2+\vec F_3=\vec F_4\)

  12. The coefficient of friction between a block and plane is \(\frac { 1 }{ \sqrt { 3 } } \). If the inclination of the plane gradually increases, at what angle will the object begin to slide?

  13. Write the differences between conservative and Non-conservative forces. Give two examples each.

  14. A body of mass 10 kg at rest is subjected to a force of 16N. Find the kinetic energy at the end of 10 s.

  15. 8 x 3 = 24
  16. What are the limitations of dimensional analysis?

  17. Define a radian?

  18. The velocity of three particles A, B, C are given below. Which particle travels at the greatest speed?
    \(\vec {v_A}=3\hat i+5\hat j+2\hat k\)
    \(\vec {V_B}=\hat i+2\hat j+3\hat k\)
    \(\vec{V_C}=5\hat i+3\hat j+4\hat k\)

  19. The position vector for a particle is represented be \(\vec r=3t^2\hat i+5t\hat j+6\hat k\), find tht velocity and speed of the particle at t = 3 sec?

  20. What are inertial frames?

  21. A lighter particle moving with a speed of 10 ms-1 collides with an object of double its mass moving in the same direction with half its speed. Assume that the collision is a one dimensional elastic collision. What will be the speed of both particles after the collision?

  22. State principle of moments

  23. What is the difference between sliding and slipping?

  24. 3 x 5 = 15
  25. Explain in detail the various types of errors.

  26. State Newton's three laws and discuss their significance.

  27. Explain the types of equilibrium with suitable examples:

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