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Motion and Measurement of Distances Test - 13

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Motion and Measurement of Distances Test - 13
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Weekly Quiz Competition
  • Question 1
    1 / -0
    The SI unit of length is :
    Solution
    The meter, symbol $$m$$, is the SI unit of length.
  • Question 2
    1 / -0
    The distance between two places is 25 km. Write the magnitude of the measurement.
    Solution
    The distance between the two places is $$25$$ km where $$25$$ represents the magnitude of measurement and km represents the unit.
  • Question 3
    1 / -0
    A to and fro motion by an object is also called 
    Solution
        Periodic motion is defined as the motion which is repeated identically after a fixed interval of time , to and fro motion is not necessary here .
        Oscillatory motion is that motion in which body moves to and fro about a fixed point in a fixed interval of time .
        In a cyclic motion , body returns at its initial position after a time .
  • Question 4
    1 / -0
    Instrument used to measure the temperature is
    Solution
    A thermometer is a device that measures the temperature of a body.
  • Question 5
    1 / -0
    Find the odd one out:
    Solution
    Giant wheel- Because it has rotational motion as well as translational motion. 
    While apple falling from a tree, a car moving on straight road and coin moving over a carrom board have only linear or rectilinear motion.  
  • Question 6
    1 / -0
    A moving vehicle on a straight road is an example of -
    Solution
    rectilinear motion is motion in straight line.
    rotatory motion is motion in circular path.
    vibration motion is to and fro motion.
    periodic motion is repeating the path again and again both rotatory and vibration motion are periodic motion also. 
    So moving on sraight road is motion in straight line so answer is option D.
  • Question 7
    1 / -0
    The wall of your classroom is in a state of -
    Solution
    The walls are at rest with respect to the Earth. When you are sitting in the classroom, you are also at rest with respect to the Earth, and so the walls do not seem to be moving to you.
  • Question 8
    1 / -0
    Motion of the earth around the sun is _____
    Solution
    Oscillatory motion takes place when the restoring force acting on the body is directly proportional to its displacement from its equilibrium position. In practice, oscillatory motion eventually comes to rest due to damping or frictional forces.
    Periodic motion, motion repeated in equal intervals of time. Periodic motion is performed.
    Linear motion is motion in straight motion.
    So earth repeats its path after some constant time period and not moving in straight line. Also force acting is not directly proportional to displacement for mean position. So the motion is periodic motion.

  • Question 9
    1 / -0
    A book lying on a table is an example of:
    Solution
    When the position of a body does not change with respect to its surroundings and time the body is said to be at rest. A book lying on the table is at rest because its position with respect to other objects on the table or room is fixed. 
    When the position of a body changes with respect to its surroundings and time the body is said to be in motion.
  • Question 10
    1 / -0
    An apple falling from a tree is an example of ______ motion
    Solution
    Apple falling from a tree falls under gravity. Hence according to Newton's laws of motion, the path of the object will be rectilinear or straight line path. 
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