Download App

Three Dimensional Geometry — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsThree Dimensional Geometry1 Mark
MCQ
The following lines are $\hat{\text{r}}=\Big(\hat{\text{i}}+\hat{\text{j}}\Big)+\lambda\Big(\hat{\text{i}}+2\hat{\text{j}}-\hat{\text{k}}\Big)+\mu\Big(-\hat{\text{i}}+\hat{\text{j}}-2\hat{\text{k}}\Big)$
  • ✓
    Collinear
  • B
    Skew$-$lines
  • C
    $Co-$planar lines
  • D
    Parallel lines
✓

Answer

Correct option: A.
Collinear

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Three Dimensional Geometry→Three Dimensional Geometry — all question types→Maths STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

For an initial screening of an admission test, a candidate is given fifty problems to solve. If the probability that the candidate can solve any problem is $\frac{4}{5}$ , then the probability that he is unable to solve less than two problems is
→
If ${\cos ^{ - 1}}\,x\, - \,{\cos ^{ - 1}}\,\frac{y}{2}\, = \,\alpha ,$ where $ - {\kern 1pt} 1\, \le \,x\, \le \,1,\,$ $- {\kern 1pt} 2\, \le \,y\, \le \,2,$ $x\, \le \,\,\frac{y}{2},$ then for all $x, y, 4x^2 -4xy\,\,cos\,\alpha  + y^2$ is equal to
→
If the set of all values of $''a''$ is $\left[ {\alpha ,\beta } \right] \cup \left[ {\gamma ,\delta } \right]$ for which $\begin{gathered}
  f\left( x \right) = \left\{ \begin{gathered}
  3x + \left| {{a^2} - 4} \right|;a \leqslant x < 1 \hfill \\
  5 - {x^2}\,\,\,\,\,\,\,\,;x \geqslant 1 \hfill \\ 
\end{gathered}  \right. \hfill \\
   \hfill \\ 
\end{gathered}$ has largest value at $x$ = $1$, then $\left( {\alpha  + \beta  + \gamma  + \delta } \right)$ is equal to
→
The maximum value of $Z = 3x + 4y$ subjected to contraints $\text{x}+\text{y}\leq40,\text{x}+2\text{y}\leq60,\text{x}\geq0$ and $\text{y}\geq0$ is:
→
A function $y = f (x)$ satisfies the condition $f '(x) sin x + f (x) cos x = 1, \, f (x)$ being bounded when $x \rightarrow  0.$ If $I = \int\limits_0^{\frac{\pi }{2}} {{\rm{f}}\,(x)\,dx} $ then
→
Which of the following is incorrect
→
$\mathop \smallint \limits_0^\pi \left[ {\cot x} \right]dx = $
→
The probablity of selecting a male or a female is same. If the probability that in an office of $n$ persons $(n - 1)$ males being selected is $\frac{3}{2^{10}},$ the value of n is:
→
The order and the degree of the differential equation $\left(1+3 \frac{d y}{d x}\right)^2=4 \frac{d^3 y}{d x^3}$ respectively are
→
A man $2$ metres tall walks away from a lamp post $5$ metres height at the rate of $4.8\ km/hr.$ The rate of increase of the length of his shadow is:
→