Basic Concepts

22 Questions
  1. 1
    Ball bearings are used in bicycles, cars, etc., because
    UPSC CSE I - 2013
  2. 2
    Consider the following statements:
    If there were no phenomenon of capillarity
    1. it would be difficult to use a kerosene lamp
    2. one would not be able to use a straw to consume a soft drink
    3. the blotting paper would fail to function
    4. the big trees that we see around would not have grown on the Earth
    Which of the statements given above are correct?
    UPSC CSE I - 2012
  3. 3

    Four wires of same material and of dimensions as under are stretched by a load of same magnitude separately. Which one of them will be elongated maximum?

    UPSC CSE I - 2007
  4. 4

    Which of the following pairs are correctly matched?

    Inventor Invention
    1. Christopher Hovercraft Cockerel
    2. David Bushnell Submarine
    3. J. C. Perrier Steamship
    UPSC CSE I - 2006
  5. 5

    A weightless rubber balloon is filled with 200 cc of water. Its weight in water is equal to:

    UPSC CSE I - 2004
  6. 6

    A spherical body moves with a uniform angular velocity (() around a circular path of radius r. Which one of the following statements is correct?

    UPSC CSE I - 2004
  7. 7

    A car is running on a road at a uniform speed of 60 km/h. The net resultant force on the car is:

    UPSC CSE I - 2004
  8. 8

    Consider the following statements:

    A 4-wheel vehicle moving in a sharp circular path at high speed will:

    1. overturn about its outer wheels
    2. overturn about its inner wheels
    3. skid outwards
    4. skid inwards

    Which of these statements are correct?

    UPSC CSE I - 2003
  9. 9

    Assertion (A): The weight of a body decreases with the increase of altitude on earth.
    Reason (R) : The earth is not a perfect sphere.
    Codes:

    UPSC CSE I - 2003
  10. 10

    An oil tanker partially filled with oil moves forward on a level road with uniform acceleration. The free surface of oil then:

    UPSC CSE I - 2003
  11. 11

    Assertion (a): Artificial satellites are always launched from the earth in the eastward direction.

    Reason (R): The earth rotates from west to east and so the satellite attains the escape velocity.

    UPSC CSE I - 2002
  12. 12

    Assertion (A): An iron ball floats on mercy but gets immersed in water.
    Reason (R): The specific gravity of iron is more than that of mercury.
    Codes:

    UPSC CSE I - 2002
  13. 13

    Consider the following statements:

    A simple pendulum is set into oscillation. Then:

    1. The acceleration is zero when the bob passes through the mean position.
    2. In each cycle the bob attains a given velocity twice.
    3. Both acceleration and velocity of the bob are zero when it reaches its extreme position during the oscillation.
    4. The amplitude of oscillation of the simple pendulum decreases with time.

    Which of these statements are correct?

    UPSC CSE I - 2001
  14. 14

    Which of the following distance-time graph (x-t) represents one-dimensional uniform motion?

    UPSC CSE I - 2001
  15. 15

    Match List I with List II and select the correct answer using the codes given below the Lists:

    List I
    (Institute)    		 List II
    (Location)
    I. Central Institute of Higher Tibetan Studies A) Hyderabad
    II. Indira Gandhi Institute of Development Research B) Mumbai
    III. National Institute of Mental Health and Neurosciences C) Bangalore
    IV. Central Institute of English and Foreign Languages D) Dharamshala
    E) Varanasi
    UPSC CSE I - 2000
  16. 16

    A hunter aims his gun at a point between the eyebrows of a monkey sitting on a branch of a tree. Just as he fires, the monkey jumps down. The bullet will:

    UPSC CSE I - 1999
  17. 17

    A smooth plane inclined at an angle 𝜃 with the horizontal as shown in the figure. A body starts from rest and slides down on the inclined surface. The time taken by the body to reach the bottom is:

    UPSC CSE I - 1997
  18. 18

    A girl is swinging on a swing in sitting position. When the girl stands up, the period of swing will:

    UPSC CSE I - 1997
  19. 19

    The working principle of a washing machine is:

    UPSC CSE I - 1997
  20. 20

    Which one of the following is a vector quantity?

    UPSC CSE I - 1997
  21. 21

    A simple machine helps a person in doing:

    UPSC CSE I - 1996
  22. 22

    A liquid is flowing in a streamlined manner through a cylindrical pipe. Along a section containing the axis of the pipe, the flow profile will be:

    UPSC CSE I - 1996