Physics class ix notes 9th class board pattern model paper
Physics Chapter No-02 Important questions, if you attempt these question you will get InshaAllah 100% marks.
Objective
Part
Choose the right option. 10×1=10
A
|
B
|
C
|
D
|
||
1
|
Riders moving in a Ferris wheel
are in a :
|
Linear motion
|
Translatory motion
|
Random motion
|
Vibratory motion
|
2
|
An axis is a line around which a
body:
|
Rotates
|
Vibrates
|
Spins
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Both a and c
|
3
|
Which one of the following is not
a vector quantity?
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Force
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Velocity
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Speed
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Acceleration
|
4
|
The shortest distance between two
points is called:
|
Distance
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Displacement
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Speed
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Velocity
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5
|
The SI unit of velocity is:
|
m
|
s
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ms-1
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ms-2
|
6
|
A body is thrown upward, its
gravitational acceleration will be:
|
Positive
|
Uniform
|
Negative
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Zero
|
7
|
To derive equation of motion, we
assume that the motion is along a:
|
Circular path
|
Curved path
|
Zigzag path
|
Straight line
|
8
|
In a distance time graph, the
distance covered by the object is taken along:
|
Horizontal axis
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Vertical axis
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On either axis
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None of these
|
9
|
The motion of earth around the
sun is:
|
Random motion
|
Circular motion
|
Rotator motion
|
Vibratory motion
|
10
|
A train is moving at a speed of
36kmh-1 its speed expressed in ms-1 is:
|
10ms-1
|
20ms-1
|
25ms-1
|
30ms-1
|
Subjective
Answer
the following short questions. 10×2=20
1.
Differentiate between circular motion
and rotator motion also gives its example.
2.
Give an example of a body at rest and in
motion at the same time.
3.
Define acceleration; write its formula
and unit.
4.
A sprinter completes its 100 meter race
in 12s. Find its average speed?
5.
Why vector quantities cannot be added
and subtracted like scalar quantities?
6.
Differentiate between uniform
acceleration and uniform velocity.
7.
Can a body move at constant speed have
acceleration?
8. What would be the shape of a speed-time graph of a body moving with variable speed?
9.
A bicycle accelerates at 1 ms-2
from an initial velocity of 4 ms-1 for 10s. Find the distance moved
by it during this interval of time?
10.
Define random and linear motion with
examples.
Long Questions 5×1=5
1.
(a) Prove that S= Vit+1/2at2.
2.5
(b)
A car has velocity of 10 ms-1. It accelerates at 0.2 ms-2
for half minute. Find the distance travelled during this time and the final
velocity of the car?
2.5
Available all
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