Questions · Page 2 of 2

M.C.Q (1 Marks)

MCQ 511 Mark
If $P(A)=\left(\frac{3}{10}\right), P(B)=\frac{2}{5}$ and $P(A \cup B)=\frac{3}{5}$, then $P\left(\frac{B}{A}\right)+P\left(\frac{A}{B}\right)$ is equal to $-$
  • A
    $\frac{1}{4}$
  • B
    $\frac{1}{3}$
  • C
    $\frac{5}{12}$
  • $\frac{7}{12}$
Answer
Correct option: D.
$\frac{7}{12}$
$\frac{7}{12}$
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MCQ 521 Mark
The distance of point $(\alpha, \beta, \gamma)$ from $y$ axis is $-$
  • A
    $\alpha$
  • B
    $\beta$
  • C
    $\gamma$
  • $\sqrt{\alpha^2+\gamma^2}$
Answer
Correct option: D.
$\sqrt{\alpha^2+\gamma^2}$
$\sqrt{\alpha^2+\gamma^2}$
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MCQ 531 Mark
The angle between the vectors $\vec{a} \times \vec{b}$ and $\vec{b} \times \vec{a}$ is
  • A
    $0$
  • B
    $90^\circ$
  • C
    $135^\circ$
  • $180^\circ$
Answer
Correct option: D.
$180^\circ$
$180^\circ$
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MCQ 541 Mark
The value of expression $\hat{i}, \hat{i}-\hat{j} \cdot \hat{j}+\hat{k} \cdot \hat{k}$ is $-$
  • A
    $0$
  • $1$
  • C
    $2$
  • D
    $3$
Answer
Correct option: B.
$1$
$1$
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MCQ 551 Mark
Area bounded by curve $y^2 = 4x, y-$ axis and line $y = 3$ is $($in sq units$)$
  • $2$
  • B
    $\frac{9}{4}$
  • C
    $\frac{9}{3}$
  • D
    $\frac{9}{2}$
Answer
Correct option: A.
$2$
$2$
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MCQ 561 Mark
Solution of $\int x \sin x\ d x$ is $-$
  • A
    $x \sin x+\cos x + c$
  • $-x \cos x+ \sin x + c$
  • C
    $x \sin x-6 \cos x+c$
  • D
    $x \cos x+ \sin x + c$
Answer
Correct option: B.
$-x \cos x+ \sin x + c$
$-x \cos x+ \sin x + c$
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MCQ 571 Mark
Solution of $\int \sin 3 x\ d x$ is
  • A
    $\frac{1}{3} \cos 3 x+c$
  • B
    $\frac{1}{3} \sin 3 x+c$
  • C
    $-\frac{1}{3} \sin 3 x+c$
  • $-\cos 3 x+c$
Answer
Correct option: D.
$-\cos 3 x+c$
$-\cos 3 x+c$
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MCQ 581 Mark
Which of the following functions is discontinuous function ?
  • A
    $\sin x$
  • B
    $X^2$
  • $\frac{1}{1-2 x}$
  • D
    $\frac{1}{1+x^2}$
Answer
Correct option: C.
$\frac{1}{1-2 x}$
$\frac{1}{1-2 x}$
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MCQ 591 Mark
If matrix $A$ and $B$ are of the order $m \times n$ and $n \times p$ respectively, then order of $AB$ is
  • A
    $p \times m$
  • B
    $n \times m$
  • $m \times p$
  • D
    $m \times n$
Answer
Correct option: C.
$m \times p$
$m \times p$
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MCQ 601 Mark
Relation $R$ is defined in set $N$ as following : $R = \{(a, b) : a = b - 2, b > 6\}$ Then which of the following is correct.
  • A
    $(2,4) \in R$
  • B
    $(3,8) \in R$
  • $(6,8) \in R$
  • D
    $(8,7) \in R$
Answer
Correct option: C.
$(6,8) \in R$
$(6,8) \in R$
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M.C.Q (1 Marks) - Page 2 - MATHS STD 12 Science Questions - Vidyadip