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Chapter 10 MCQs For AMU/JMI XI-Dip.Engg. Entrance Test

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Chapter 10  : Gravitation    


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  1. Unknown31 March 2020 at 07:31

    Mohd Qasim .Gravitation sheet
    Ques 21 .The Gravitation for of attraction between two masses ,.,.,..................gravitational force of attraction between them

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    Replies
    1. amucompetition1 April 2020 at 08:32

      F= α = G.m1.m2/r^2 -------------------1
      r’ = (100-60)% of r = 0.4r
       F’ = G.m1.m2/(0.4r)^2 = (1/0.4)^2.G.m1.m2/r^2
       F’ = 6.25. G.m1.m2/r^2 = 6.25α (from 1)

      Delete
  2. Unknown31 March 2020 at 07:33

    Mohd Qasim Gravitation Sheet
    Ques 36 .An object of mass........
    ....Neglect the air resistance.

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    Replies
    1. amucompetition1 April 2020 at 22:40

      36. Ans: (b)
      u = 0, m=m, t=t
      h = ut-1/2 at^2
      h = 0 - 1/( 2) 10 x t^2
      H = -5t^2
      Height of the tower = 5t^2

      Delete
  3. Unknown31 March 2020 at 07:39

    Mohd Qasim Gravitation Sheet.
    Ques 50. Calculate the .........mass is 20 kg

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  4. Unknown31 March 2020 at 07:40

    Mohd Qasim Gravitation Sheet.
    Ques 51 . Calculate the,........mass is 20 kg

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    Replies
    1. amucompetition1 April 2020 at 23:08

      Sol. 51, Ans (b)
      Gravity on moon = one-sixth of gravity n earth = 10/6 m/s2
      Weight on moon = mass x gravity at moon
      = 20 x 10/6 = 33.33N

      Delete
  5. Unknown31 March 2020 at 07:41

    Mohd Qasim Gravitation Sheet.
    Ques 54 .When a person........on the ground.

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    Replies
    1. amucompetition1 April 2020 at 23:11

      Ans (a)
      thrust is the weight of the person and it will not change if he standing or lay down.
      so, the thrust will be the same in both cases

      Delete
  6. Unknown31 March 2020 at 07:42

    Mohd Qasim Gravitation Sheet.
    Ques 62 .In Q61 what ..............table leg.

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    Replies
    1. amucompetition1 April 2020 at 23:16

      62. Ans: (d)
      Load on the table = 600N
      Load on one leg = 600/4 = 150N
      Area of each leg = 25cm2
      Pressure increase on each leg = 150/25 = 6N/cm2 = 6000N/m2

      Delete
  7. Unknown31 March 2020 at 07:43

    Mohd Qasim Gravitation Sheet.
    Ques 64 . Three identical bricks .......
    ..........bricks will be

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    Replies
    1. amucompetition1 April 2020 at 23:20

      64. Ans (a)
      Thrust = Weight =mg = 30 x 9.8 =29.4

      Delete
  8. Unknown31 March 2020 at 07:44

    Mohd Qasim Gravitation Sheet.
    Ques 68 .The foundation of the buildings.

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    Replies
    1. amucompetition1 April 2020 at 08:21

      Pressure on the ground = weight of the building/ Area of footing of foundation.
      The load of the building comes on the columns and then to the foundation and finally to the ground.
      Increasing the area of footing decreases the pressure on the ground.
      Therefore, foundations decrease the pressure on the ground due to the weight of the building
       Ans is (C )

      Delete
  9. Unknown1 April 2020 at 08:12

    Sir Q-31 ka ans d ho ga shayad lekin answersheet me c diya he

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  10. amucompetition1 April 2020 at 08:23

    yes ...answer is d

    ReplyDelete

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