###### UGC NET Dec-2020 and June-2021 Paper-2

October 17, 2023###### Candidate-key

October 17, 2023# UGC NET Dec-2020 and June-2021 Paper-2

Question 14 |

Which of the graphs is/are planar?

choose the correct answer from the options given below:

choose the correct answer from the options given below:

A and B only | |

A only | |

B and C only | |

B only |

Question 14 Explanation:

A planar graph is a graph that can be embedded in the plane, i.e., it can be drawn on the plane in such a way that its edges intersect only at their endpoints.

In other words, it can be drawn in such a way that no edges cross each other.

Option-A is planar.

Option-B is planar

Option-C is non planar

In other words, it can be drawn in such a way that no edges cross each other.

Option-A is planar.

Option-B is planar

Option-C is non planar

Correct Answer: D

Question 14 Explanation:

A planar graph is a graph that can be embedded in the plane, i.e., it can be drawn on the plane in such a way that its edges intersect only at their endpoints.

In other words, it can be drawn in such a way that no edges cross each other.

Option-A is planar.

Option-B is planar

Option-C is non planar

In other words, it can be drawn in such a way that no edges cross each other.

Option-A is planar.

Option-B is planar

Option-C is non planar

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