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NDA GK Previous Papers Chapterwise MCQs - Mechanics
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NDA GK Previous Papers Chapterwise MCQs - Mechanics
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25 Questions

1. The densities of three liquids are D, 2D and 3D. What will be the density of the resulting mixture if equal volumes of the three liquids are mixed?
2. The weight of a body is 9.8 N at the place where g = 9.8 ms–2. Its mass is
3. Which one of the following has maximum inertia?
4. If an object moves with constant velocity then which one of the following statements is NOT correct?
5. A long jumper runs before jumping because he
6.
A block of mass 2 m is pulled along a horizontal frictionless surface by a rope of mass m as shown in the figure given above. What force is exerted by the rope on the block ?
7. A staircase has 5 steps each 10 cm high and 10 cm wide. What is the minimum horizontal velocity to be given to the ball so that it hits directly the lowest plane from the top of the staircase ? (g = 10 ms–2)
8. Which one of the following is not a result of surface tension?
9. In the relation a = bt + l, a and l are measured in meter (m) and t is measured in second (s). The SI unit of b must be
10. On planet Earth, there is no centrifugal force at the
11. If the motion of an object is represented by a straight line parallel to the time axis in a distance-time graph, then the object undergoes
12. How many cubic centimeters (cm3) are in a cubic metre (m3)?
13. Which one of the following statements about gravitational force is NOT correct?
14. A body is thrown upward against the gravity 'g' with initial velocity 'u'. Which one among the following is the correct expression for its final velocity when attains the maximum height?
15. Mass of a particular amount of substance
1. is the amount of matter present in it.
2. does not vary from place to place.
3. changes with change in gravitational force. Select the correct answer using the code given below:
16. An object is in uniform circular motion on a plane. Suppose that you measure its displacement from the centre along one direction, say, along the x-axis. Which one among the following graphs could represent this displacement (x)?
17. How does the weight of a body vary while moving from the earth to the moon ?
18. The value of which one of the following quantities remains same in all systems of units?
19. For a simple pendulum, the graph between T2 and L (where T is the time period & L is the length) is
20. Which one of the following pairs does not have the same dimension?
21. An object is undergoing a non-accelerated motion. Its rate of change of momentum is
22. Which one of the following forces is non-central and nonconservative ?
23.
A heavy ball is suspended as shown in the figure given above. A quick jerk on the lower string will break that string but a slow pull on the lower string will break the upper string. The first result occurs because"
24. A jet plane flies through air with a velocity of 2 Mach. While the velocity of sound is 332 m/s, the air speed of the plane is
25. The position– time (x – t) graph for motion of a body is given below:

Which one among the following is depicted by the above graph?

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