MCQ (1 Marks)

MCQ 1511 Mark

A bus travels $54\ km$ in $90$ minutes. The speed of the bus is:

A
$0.6\ m/ s$
✓
$10\ m/ s$
C
$5.4\ m/ s$
D
$3.6\ m/ s$

Answer

Correct option: B.

$10\ m/ s$

Distance $= 54\ km$
$= 54 \times 1000\ m$
Distance $= 54000\ m$
Time $= 90$ minutes
$= 90 \times 60$
Time $= 5400s$
Therefore,
Distance $= 54000\ m$
Time $= 5400s$
$\text{Speed}=\frac{\text{Distance}}{\text{Time}}$
$\text{Speed}=\frac{54000}{5400}$
Speed $= 10\ m/ s$

View full question & answer→

MCQ 1521 Mark

Speed of a body depends on:

A
Time
B
Mass of the body
C
Distance travelled by the body
✓
Both $A$ and $C$

Answer

Correct option: D.

Both $A$ and $C$

Speed is defined as
$\text{Speed}=\frac{\text{Distance travelled}}{\text{time interval}}$
Hence speed depends both on time and distance travelled by the body.

View full question & answer→

MCQ 1531 Mark

What does the path of an object look like when it is in uniform motion?

✓
Straight line
B
Zig $-$ Zag
C
Curved line
D
Cicular

Answer

Correct option: A.

Straight line

In uniform motion, the object moves along a straight path $i.e.$ The path of object is a straight line.

View full question & answer→

MCQ 1541 Mark

If we denote speed by $S,$ distance by $D$ and time by $T,$ the relationship between these quantities is:

A
$\text{S}=\text{D}\times\text{T}$
B
$\text{T}=\frac{\text{S}}{\text{D}}$
✓
$\text{S}=\frac{1}{\text{T}}\times\text{D}$
D
$\text{S}=\frac{\text{T}}{\text{D}}$

Answer

Correct option: C.

$\text{S}=\frac{1}{\text{T}}\times\text{D}$

$\because\text{Speed(S)}=\frac{\text{Distance(D)}}{\text{Time(T)}}$

View full question & answer→

MCQ 1551 Mark

Two students were asked to plot a distance-time graph for the motion described by Table $A$ and Table $B.$
Table A

Distance moved (m)	$0$	$10$	$20$	$30$	$40$	$50$
Time (minutes)	$0$	$2$	$4$	$6$	$8$	$10$

Table B

Distance moved (m)	$0$	$5$	$10$	$15$	$20$	$25$
Time (minutes)	$0$	$1$	$2$	$3$	$4$	$5$

The graph given in Figure is true for:

✓
Both $A$ and $B.$
B
$A$ only.
C
$B$ only.
D
Neither $A$ nor $B.$

Answer

Correct option: A.

Both $A$ and $B.$

Since, speed is constant for $A$ and $B,$ so graph for $A$ and $B$ will be a straight line as given in figure.

View full question & answer→

MCQ 1561 Mark

According to $SI$ system, the standard unit of time is:

A
Minute
B
Hour
C
Day
✓
Second

Answer

Correct option: D.

Second

According to $SI$ system, the standard unit of time is second.

View full question & answer→

MCQ 1571 Mark

A body in uniform motion moves with:

A
Constant velocity
✓
Constant speed
C
Constant acceleration
D
None of these

Answer

Correct option: B.

Constant speed

A motion of a body is said to be uniform when it covers equal distance in equal interval of time.
It can be rectilinear, circular. In uniform motion, direction does not matter whether it is changing or not, but magnitude $i.e.$ speed needs to be constant.

View full question & answer→

Science MCQ (1 Marks)