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Motion and Measurement of Distances Test - 19

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Motion and Measurement of Distances Test - 19
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Four pieces of wooden sticks P, Q, R and S are placed along the length of 15 cm long scale as shown in figure. What is the average length of these sticks?

    Solution

    The length of the different sticks is as follows:
    $$P = 2.1 cm;\\ Q = 3.0 cm;\\ R = 3.1 cm;\\ S = 2.5 cm$$

    Average length of these sticks 
    $$=\dfrac{P+Q+R+S}{4}$$ 

    $$= 2.6 cm$$
  • Question 2
    1 / -0
    The motion of train and car belongs to:
    Solution
    Since train and car move in straight line, thus they exhibit translatory motion.
  • Question 3
    1 / -0
    What is common to the following?
    (a) Motion of the propeller of a flying helicopter, 
    (b) The minute hand of a watch, 
    (c) The tape of cassette recorder.
    Solution
    Motions of the propeller of a flying helicopter, the minute hand of watch and tape of cassette recorder are the example of rotatory motion. Because in rotational motion every point on the object moves on the different circular path with same angular speed.
    Correct answer is option C.
  • Question 4
    1 / -0
    Which one of the following is not a periodic motion?
    Solution
    An arrow released from a bow is not a periodic motion while all others are periodic motion.
  • Question 5
    1 / -0
    Which of the following is not unit of length?
    Solution

    SI unit of length is Metre, denoted by (m).

    Angstrom is a unit of length and 1 Angstrom = $${{10}^{-10}}m$$

    Fermi is a unit of length also known as femtometre and 1 fermi = $${{10}^{-15}}m$$

    parsec is a unit of and 1 parsec = $$3.085\times {{10}^{16}}m$$

    barn is unit of nuclear cross section, not length

     

    $$\textbf{Answer}$$

    $$\textbf{Hence, the correct option is (c) barn}$$

  • Question 6
    1 / -0
    ____________ is actual, physical movements of goods and people between two points.
    Solution
    Transportation means to take or carry people or goods from one place to another.

    The correct answer is option C.
  • Question 7
    1 / -0
    A length is measured as $$7.60\ m$$. This is the same as
    Solution
    Length $$l=7.6m$$
    we know 
    $${ 1 \ m }=100 \ cm=1000 \ mm=10\ dm$$
    $$\therefore l= 7.6 \ m=(7.60\times 100)cm=(7.60\times 1000)mm=(7.6\times 10)dm$$
    $$\Rightarrow l= 7.6 \ m=760\ cm=7600\ mm=76\ dm$$
    So, the option C is the correct one.
  • Question 8
    1 / -0
    An object is said to be in motion, if its position (with respect to another object)
    Solution
    An object is said to be in motion, if its position changes with respect to its surroundings and time.
  • Question 9
    1 / -0
    Fathom is the unit to measure the
    Solution
    Fathom is a unit of length equal to six feet. It is used to measure depth of sea.
  • Question 10
    1 / -0
    Metre is the SI unit of
    Solution
    According to International System of Units(SI) unit of length is $$metre$$.
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