Questions · Page 3 of 3

MCQ

MCQ 1011 Mark
$|\overrightarrow{ A } \times \overrightarrow{ B }|$ is equal to -
  • A
    $-|\overrightarrow{ A } \times \overrightarrow{ B }|$
  • $|\overrightarrow{ B } \times \overrightarrow{ A }|$
  • C
    $-|\overrightarrow{ B } \times \overrightarrow{ A }|$
  • D
    $\frac{\overline{ A } \times \overline{ B }}{|\overline{ A } \times \overline{ B }|}$
Answer
Correct option: B.
$|\overrightarrow{ B } \times \overrightarrow{ A }|$
$|\overrightarrow{ B } \times \overrightarrow{ A }|$
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MCQ 1021 Mark
The vector product of any two vectors gives a –
  • vector
  • B
    scalar
  • C
    tensor
  • D
    col-linear
Answer
Correct option: A.
vector
vector
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MCQ 1031 Mark
$\overrightarrow{ A } \times \overrightarrow{ B }$ is equal to -
  • A
    $\vec{B} \times \vec{A}$
  • B
    $\overrightarrow{ A }+\overrightarrow{ B }$
  • $-\overrightarrow{ B } \times \overrightarrow{ A }$
  • D
    $\overrightarrow{ A }-\overrightarrow{ B }$
Answer
Correct option: C.
$-\overrightarrow{ B } \times \overrightarrow{ A }$
$-\vec{B} \times \vec{A}$
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MCQ 1041 Mark
$\overrightarrow{ A } \times \overrightarrow{ B }$ is -
  • A
    $A B \cos \theta$
  • $A B \sin \theta$
  • C
    $A B \tan \theta$
  • D
    $A B \sec \theta$
Answer
Correct option: B.
$A B \sin \theta$
$A B \sin \theta$
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MCQ 1051 Mark
The direction of $\overrightarrow{ A } \times \overrightarrow{ B }$ is given by-
  • A
    right hand screw rule
  • B
    right hand thumb rule
  • both (a) and (b)
  • D
    neither (a) and (b)
Answer
Correct option: C.
both (a) and (b)
both (a) and (b)
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MCQ 1061 Mark
If $\overrightarrow{ A }$ and $\overrightarrow{ B }$ are two vectors, which are acting along $x , y$ respectively, then $\overrightarrow{ A }$ and $\overrightarrow{ B }$ lies along -
  • A
    $x$
  • B
    $y$
  • $z$
  • D
    none
Answer
Correct option: C.
$z$
$z$
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MCQ 1081 Mark
The magnitude of the vector is –
  • A
    $A^2$
  • $\sqrt{ A ^2}$
  • C
    $\sqrt{ A }$
  • D
    $\sqrt[3]{ A }$
Answer
Correct option: B.
$\sqrt{ A ^2}$
$\sqrt{ A ^2}$
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MCQ 1091 Mark
The vectors A and B to be mutually orthogonal when –
  • A
    $\overrightarrow{ A }+\overrightarrow{ B }=0$
  • B
    $\overrightarrow{ A }-\overrightarrow{ B }=0$
  • $\overrightarrow{ A } \cdot \overrightarrow{ B }=0$
  • D
    $\overrightarrow{ A } \times \overrightarrow{ B }=0$
Answer
Correct option: C.
$\overrightarrow{ A } \cdot \overrightarrow{ B }=0$
$\overrightarrow{ A } \cdot \overrightarrow{ B }=0$
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MCQ 1101 Mark
The scalar product of two vectors will be minimum. When θ is equal to –
  • A
  • B
    45°
  • C
    60°
  • 180°
Answer
Correct option: D.
180°
180°
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MCQ 1111 Mark
The scalar product of two vectors will be maximum when θ is equal to –
  • B
    90°
  • C
    180°
  • D
    270°
Answer
Correct option: A.
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MCQ 1121 Mark
The scalar product $\vec{A} . \vec{B}$ is equal to-
  • A
    $\overrightarrow{ A }+\overrightarrow{ B }$
  • $\overrightarrow{ A } \cdot \overrightarrow{ B }$
  • C
    $A B \sin \theta$
  • D
    $\overrightarrow{( A } \times \overrightarrow{ B }$
Answer
Correct option: B.
$\overrightarrow{ A } \cdot \overrightarrow{ B }$
$\overrightarrow{ A } \cdot \overrightarrow{ B }$
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MCQ 1131 Mark
The scalar product $\overrightarrow{ A } \cdot \overrightarrow{ B }$ is equal to-
  • A
    $\overrightarrow{ A }+\overrightarrow{ B }$
  • B
    AB sin θ
  • $AB \cos \theta$
  • D
    $\overrightarrow{ A }+\overrightarrow{ B }$
Answer
Correct option: C.
$AB \cos \theta$
$AB \cos \theta$
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MCQ 1151 Mark
If a vector $\overrightarrow{ A }=3 \hat{i}+2 \hat{j}$ then what is $4 A$ -
  • $12 \hat{i}+8 \hat{j}$
  • B
    $0.75 \hat{i}+0.5 \hat{j}$
  • C
    $3 \hat{i}+2 \hat{j}$
  • D
    $7 \hat{i}+6 \hat{j}$
Answer
Correct option: A.
$12 \hat{i}+8 \hat{j}$
$12 \hat{i}+8 \hat{j}$
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MCQ 1161 Mark
The angle between $(\overrightarrow{ A }+\overrightarrow{ B })$ and $(\overrightarrow{ A }-\overrightarrow{ B })$ can be -
  • A
    only 0°
  • B
    only 90°
  • C
    between 0° and 90°
  • between 0° and 180°
Answer
Correct option: D.
between 0° and 180°
between 0° and 180°
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MCQ 1171 Mark
The resultant of $\overrightarrow{ A }+\overrightarrow{ B }$ acts along $x$-axis. If $A =2 \hat{i}-3 \hat{j}+2 \hat{k}$ then $B$ is-
  • A
    $-2 \hat{i}+\hat{j}+\hat{k}$
  • $3 \hat{j}-2 \hat{k}$
  • C
    $-2 \hat{i}-3 \hat{j}$
  • D
    $-2 \hat{i}-2 \hat{k}$
Answer
Correct option: B.
$3 \hat{j}-2 \hat{k}$
$3 \hat{j}-2 \hat{k}$
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MCQ 1191 Mark
A force of 3 N and 4 N are acting perpendicular to an object, the resultant force is-
  • A
    9 N
  • B
    16 N
  • 5 N
  • D
    7 N
Answer
Correct option: C.
5 N
5 N
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MCQ 1201 Mark
If R = P + Q, then which of the following is true?
  • A
    P > Q
  • B
    Q > P
  • C
    P = Q
  • R > P, Q
Answer
Correct option: D.
R > P, Q
R > P, Q
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MCQ 1221 Mark
If $\hat{n}$ is a unit vector along the direction of $\vec{A}$, the $\hat{n}$ is-
  • A
    $\overrightarrow{ A } A$
  • B
    $n \times A$
  • $\overrightarrow{ A } / A$
  • D
    $\overrightarrow{ A }| A |$
Answer
Correct option: C.
$\overrightarrow{ A } / A$
$\overrightarrow{ A } / A$
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MCQ 1231 Mark
The angle between any two orthogonal unit vectors is –
  • A
  • 90°
  • C
    180°
  • D
    360°
Answer
Correct option: B.
90°
90°
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MCQ 1241 Mark
A unit vector is used to specify –
  • A
    only magnitude
  • only direction
  • C
    either magnitude (or) direction
  • D
    absolute value
Answer
Correct option: B.
only direction
only direction
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MCQ 1251 Mark
Unit vector is –
  • A
    having magnitude one but no direction
  • B
    $A \widehat{A}$
  • $\frac{\widehat{A}}{A}$
  • D
    $|A|$
Answer
Correct option: C.
$\frac{\widehat{A}}{A}$
$\frac{\widehat{A}}{A}$
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MCQ 1261 Mark
The angle between anti parallel vectors is –
  • A
  • B
    90°
  • 180°
  • D
    0° (or) 180°
Answer
Correct option: C.
180°
180°
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MCQ 1281 Mark
The angle between two collinear vectors is / are –
  • A
  • B
    90°
  • C
    180°
  • 0° (or) 180°
Answer
Correct option: D.
0° (or) 180°
0° (or) 180°
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MCQ 1291 Mark
If two vectors are having equal magnitude and same direction is known as –
  • equal vectors
  • B
    col-linear vectors
  • C
    parallel vectors
  • D
    on it vector
Answer
Correct option: A.
equal vectors
equal vectors
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MCQ 1301 Mark
“norm” of the vector represents –
  • only magnitude
  • B
    only direction
  • C
    both magnitude and direction
  • D
    either magnitude or direction
Answer
Correct option: A.
only magnitude
only magnitude
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MCQ 1311 Mark
Vector is having –
  • A
    only magnitude
  • B
    only direction
  • bot magnitude and direction
  • D
    either magnitude or direction
Answer
Correct option: C.
bot magnitude and direction
both magnitude and direction
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MCQ 1321 Mark
Which of the following is not a scalar?
  • A
    Volume
  • angular momentum
  • C
    Relative density
  • D
    time
Answer
Correct option: B.
angular momentum
angular momentum
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MCQ 1331 Mark
Example for scalar is –
  • distance
  • B
    displacement
  • C
    velocity
  • D
    angular momentum
Answer
Correct option: A.
distance
distance
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MCQ 1341 Mark
A bird flying in the sky is an example of –
  • A
    one dimensional motion
  • B
    two dimensional motio
  • three dimensional motion
  • D
    none
Answer
Correct option: C.
three dimensional motion
three dimensional motion
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MCQ 1351 Mark
Motion of a coin on a carrom board is an example of –
  • A
    one dimensional motion
  • two dimensional motion
  • C
    three dimensional motion
  • D
    none
Answer
Correct option: B.
two dimensional motion
two dimensional motion
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MCQ 1361 Mark
An object falling freely under gravity close to earth is –
  • one dimensional
  • B
    circular motion
  • C
    rotational motion
  • D
    spinning motion
Answer
Correct option: A.
one dimensional
one dimensional
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MCQ 1371 Mark
The motion of satellite around the earth is an example for –
  • circular motion
  • B
    rotational motion
  • C
    elliptical motion
  • D
    spinning
Answer
Correct option: A.
circular motion
circular motion
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MCQ 1381 Mark
Vibratory motion is also known as –
  • A
    circular motion
  • B
    rotational motion
  • oscillatory motion
  • D
    spinning
Answer
Correct option: C.
oscillatory motion
oscillatory motion
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MCQ 1391 Mark
If an object executes a to and fro motion about a fixed point, is an example for –
  • A
    rotational motion
  • vibratory motion
  • C
    circular motion
  • D
    curvilinear motion
Answer
Correct option: B.
vibratory motion
vibratory motion
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MCQ 1401 Mark
Spinning of the earth about its own axis is known as –
  • A
    linear motion
  • B
    circular motion
  • C
    curvilinear motion
  • rotational motion
Answer
Correct option: D.
rotational motion
rotational motion
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MCQ 1411 Mark
The whirling motion of a stone attached to a string is a –
  • A
    linear motion
  • circular motion
  • C
    curvilinear motion
  • D
    rotational motion
Answer
Correct option: B.
circular motion
circular motion
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MCQ 1421 Mark
An athlete running on a straight track is an example for the whirling motion of a stone attached to’a string is a –
  • linear motion
  • B
    circular motion
  • C
    curvilinear motion
  • D
    rotational motion
Answer
Correct option: A.
linear motion
linear motion
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MCQ 1431 Mark
If an object is moving in a straight line then the motion is known as –
  • linear motion
  • B
    circular motion
  • C
    curvilinear motion
  • D
    rotational motion
Answer
Correct option: A.
linear motion
linear motion
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MCQ 1451 Mark
If the coordinate axes (x, y, z) are drawn in anticlockwise direction then the co-ordinate system is known as –
  • A
    Cartesian coordinate system
  • right handed coordinate system
  • C
    left handed coordinate system
  • D
    cylindrical coordinate system
Answer
Correct option: B.
right handed coordinate system
right handed coordinate system
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MCQ 1461 Mark
The branch of mechanics which deals with the motion of objects without taking force into account is –
  • A
    kinetics
  • B
    dynamics
  •  kinematics
  • D
    statics
Answer
Correct option: C.
 kinematics
kinematics
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MCQ 1471 Mark
The radius of the earth was measured by –
  • A
    Newton
  • Eratosthenes
  • C
    Galileo
  • D
    Ptolemy
Answer
Correct option: B.
Eratosthenes
Eratosthenes
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