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Q.


Which of the following curves are both simple and closed curves?

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a

Question Image

b

Question Image

c

Both 1 and 2

d

None 

answer is B.

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Detailed Solution


 In the given figures the first curve is an open curve since their ends do not intersect.
The second curve is a closed figure since it forms an area enclosed within it.
So both the figures are simple curves. But only the second one is the closed curve. So the second figure is both a simple and closed figure.
So, option 2 is correct.
 

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