MCQ

MCQ 11 Mark

A car starting from rest accelerates uniformly to acquire a speed $20\ km\ h ^{-1}$ in $30\min .$ The distance travelled by a car in this time interval will be$..........$

A
$600\ km$
✓
$5\ km$
C
$6\ km$
D
$10\ km$

Answer

Correct option: B.

$5\ km$

A car starting from rest accelerates uniformly to acquire a speed $20\ km\ h ^{-1}$ in $30\min .$ The distance travelled by a car in this time interval will be $5\ km$

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MCQ 21 Mark

The correct equation of motion is :

A
$v = u + aS$
B
$v=u t+a$
C
$S =u t+\frac{1}{2} a t$
✓
$v = u + at$

Answer

Correct option: D.

$v = u + at$

The correct equation of motion is $v = u + at$

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MCQ 31 Mark

For uniform motion $...........$

A
The distance-time graph is a straight line parallel to the time axis.
B
The speed-time graph is a straight line inclined to the time axis.
✓
The speed-time graph is a straight line parallel to the time axis.
D
The acceleration-time graph is a straight line parallel to the time axis.

Answer

Correct option: C.

The speed-time graph is a straight line parallel to the time axis.

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MCQ 41 Mark

For a uniformly retarded motion, the velocity-time graph is $...........$

A
A curve
B
A straight line parallel to the time axis
C
A straight line perpendicular to the time axis
✓
A straight line inclined to the time axis

Answer

Correct option: D.

A straight line inclined to the time axis

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MCQ 51 Mark

The velocity-time graph of a body in motion is a straight line inclined to the time axis. The correct statement is$..............$

A
Velocity is uniform
✓
Acceleration is uniform
C
Both velocity and acceleration are uniform
D
Neither velocity nor acceleration is uniform.

Answer

Correct option: B.

Acceleration is uniform

The velocity-time graph of a body in motion is a straight line inclined to the time axis. The correct statement is Acceleration is uniform.

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MCQ 61 Mark

$18\ km\ h^{-1}$ is equal to $.............$

A
$10\ m\ s ^{-1}$
✓
$5\ m\ s ^{-1}$
C
$18\ m\ s ^{-1}$
D
$1.8\ m\ s ^{-1}$

Answer

Correct option: B.

$5\ m\ s ^{-1}$

$18\ km\ h^{-1}$ is equal to $5\ m\ s ^{-1}$

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MCQ 71 Mark

A body when projected up with an initial velocity u goes to a maximum height h in time t and then comes back at the point of projection. The correct statement is $..............$

A
The average velocity is $2\ h/t.$
B
The acceleration is zero.
C
The final velocity on reaching the point of projection is $2\ u.$
✓
The displacement is zero.

Answer

Correct option: D.

The displacement is zero.

A body when projected up with an initial velocity u goes to a maximum height h in time t and then comes back at the point of projection. The correct statement is the displacement is zero.

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MCQ 81 Mark

The unit of retardation is $..........$

A
$m s ^{-1}$
✓
$m s ^{-2}$
C
$m$
D
$m s ^2$

Answer

Correct option: B.

$m s ^{-2}$

The unit of retardation is $m s ^2$

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MCQ 91 Mark

The S.I. unit of velocity is $............$

A
$km\ h ^{-1}$
B
$m\ \min ^{-1}$
C
$km\ \min ^{-1}$
✓
$m\ s ^{-1}$

Answer

Correct option: D.

$m\ s ^{-1}$

The $S.I.$ unit of velocity is $m\ s ^{-1}$

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MCQ 101 Mark

The vector quantity is :

A
Work
B
Pressure
C
Distance
✓
velocity

Answer

Correct option: D.

velocity

The vector quantity is : velocity
Velocity is a vector quantity. The others are all scalar quantities.

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PHYSICS MCQ

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