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MATHS Assertion (A) & Reason (B) MCQ

Symmetry. · Gujarat Board (GSEB) STD 6 (GSEB - English Medium). 3 questions.

Questions

Assertion (A) & Reason (B) MCQ

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3 questions · timed · auto-graded

MCQ 11 Mark
Assertion: The given figure has rotational symmetry of order 2.
Image
Reason: A figure that has an angle of symmetry 180 degrees is said to have rotational symmetry of order 2.
In the given question, a statement of Assertion is followed by a statement of Reason. Choose the correct option as:
  • A
    Assertion and Reason both are correct and Reason is the correct explanation of the Assertion.
  • B
    Assertion and Reason both are correct but Reason is not the correct explanation of the Assertion.
  • C
    Assertion is correct but Reason is not correct.
  • D
    Assertion is not correct but Reason is correct.
Answer
A. Assertion and Reason both are correct and Reason is the correct explanation of the Assertion.
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MCQ 21 Mark
Assertion (A): A square has six lines of symmetry.
Reason (R) : A line of symmetry is a line that divides the object in two identical parts.
  • A
    Both Assertion (A) and Reason (R) are the true and Reason (R) is a correct explanation of Assertion (A).
  • B
    Both Assertion (A) and Reason (R) are the true, but Reason (R) is not a correct explanation of Assertion (A).
  • C
    Assertion (A) is true and Reason (R) is false.
  • D
    Assertion (A) is false and Reason (R) is true.
Answer
Option (d) is correct.
Explanation:
A square has 4 lines of symmetry, not 6 lines of symmetry. And symmetry is a line which divides it into two equal parts.
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MCQ 31 Mark
Assertion (A): There are infinite lines of symmetry in a circle.
Reason (R): The diameter is the mirror line of sym-metry of a circle and there are infinite diameters possible for a given circle. [Medium]
  • A
    Both Assertion (A) and Reason (R) are the true and Reason (R) is a correct explanation of Assertion (A).
  • B
    Both Assertion (A) and Reason (R) are the true, but Reason (R) is not a correct explanation of Assertion (A).
  • C
    Assertion (A) is true and Reason (R) is false.
  • D
    Assertion (A) is false and Reason (R) is true.
Answer
Option (a) is correct.
Explanation:
There are infinite lines of symmetry of a circle because the lines of symmetry of a circle can be drawn from any angles and the diameter in a circle is the mirror line of symmetry of a circle and there are infinite diameters possible for a given circle.
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Assertion (A) & Reason (B) MCQ - MATHS STD 6 Questions - Vidyadip