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Physics Test 183
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Physics Test 183
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  • Question 1/10
    4 / -1

    A ship A is moving westwards with a speed of 10kmh−1 and a ship B 100 km South of A, is moving northwards with a speed of 10kmh−1. The time after which the distance between them becomes shortest, is

    Solutions

    Given situation is shown in the figure

    OS = 100 km

    OP = Shortest distance

    Relative velocity between A and B is

  • Question 2/10
    4 / -1

    A particle is moving such that its position coordinates (x, y) are (2 m, 3 m) at time t = 0, (6 m, 7 m) at time t = 2 s and (13 m, 14 m) at time t = 5 s.

    Average velocity vector  from t = 0 to t = 5 s is

    Solutions

     

  • Question 3/10
    4 / -1

    Solutions

     

  • Question 4/10
    4 / -1

    A particle has initial velocity  The magnitude of velocity after 10 seconds will be

    Solutions

     

  • Question 5/10
    4 / -1

    A missile is fired for maximum range with an initial velocity of 20 m/s.  the range of missile is

    Solutions

     

  • Question 6/10
    4 / -1

    Choose the wrong statement for zero error and zero correction:

    Solutions

    if the zero line of the vernier scale is not coinciding with the main scale the zero error exists. Knowing the zero error necessary correction can be made to find correct measurement. Such a correction is called zero correction.

    In positive zero error zero of vernier scale lies to right of the zero of the main scale.

     

  • Question 7/10
    4 / -1

    Which of the following pairs of physical quantities does not have same dimensional formula?

    Solutions


     

     

  • Question 8/10
    4 / -1

    A particle moves in a straight line with a constant acceleration. It changes its velocity from 10ms−1 to 20ms−1 while passing through a distance 135 m in t second. The value of t is

    Solutions

     

  • Question 9/10
    4 / -1

    A car moves from X to Y with a uniform speed vu and returns to Y with a uniform speed vd. The average speed for this round trip is

    Solutions

     

  • Question 10/10
    4 / -1

    Two bodies A (of mass 1kg) and B (of mass 3kg) are dropped from heights of 16m and 25m, respectively. The ratio of the time taken by them to reach the ground is

    Solutions

    Time taken by a body fall from a height h to reach the ground is

     

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