Questions

Assertion (A) & Reason (B) MCQ

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2 questions · timed · auto-graded

MCQ 11 Mark
Assertion (A): The point (0, 3) lies on the graph of the linear equation 3x + 4y = 12.
Reason (R): (0, 3) satisfies the equation 3x + 4y = 12.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
(a) Both A and R are true and R is the correct explanation of A.
Explanation: Both A and R are true and R is the correct explanation of A.
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MCQ 21 Mark
Assertion $(A):$ The height of the triangle is $18 \ cm$ and its area is $72 \ cm^2$. Its base is $8 \ cm.$
Reason $(R):$ Area of a triangle $=\frac{1}{2} \times$ base $\times$ height
  • Both $A$ and $R$ are true and $R$ is the correct explanation of $A.$
  • B
    Both $A$ and $R$ are true but $R$ is not the correct explanation of $A.$
  • C
    $A$ is true but $R$ is false.
  • D
    $A$ is false but $R$ is true.
Answer
Correct option: A.
Both $A$ and $R$ are true and $R$ is the correct explanation of $A.$
Assertion: Area of $\triangle=\frac{1}{2} \times$ base $\times$ height
$72=\frac{1}{2} \times 18 \times b$
$b=\frac{72 \times 2}{18}$
$=8 \ cm$
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Assertion (A) & Reason (B) MCQ - Maths STD 9 Questions - Vidyadip