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question_answer1)
The given figure shows a heavy box being pushed and pulled-The number of persons pulling the box is
A)
1 done
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B)
2 done
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C)
3 done
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D)
4 done
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question_answer2)
In a game of tug-o-war. Mark pulls the rope with a force of 60 N from the right. Sandy and George pull the rope with respective forces of 40 N and 20 N from the left, as shown in the given figure. The net force on the rope is
A)
10 N done
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B)
2 N done
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C)
60 N done
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D)
120 N done
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question_answer3)
Sandy, Jackie, Rudy, Ronnie, Cruz, and Harry are pushing a box by applying forces of magnitudes 25 N, 35 N, 45 N, 45 N, 30 N, and 50 N respectively, as shown in the given figure
Which row shows the net force acting on the box and its consequent motion?
A)
Net force (N) Motion of the box 20 Towards South done
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B)
C)
D)
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question_answer4)
A trolley is moving at a constant speed of 2 m/s. Cole and Paul start pushing the trolley at the same time from opposite directions, as shown in the figure. Both of them are applying a force of 15 N on the trolley.
The speed of the trolley will
A)
remain the same done
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B)
become zero done
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C)
decrease done
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D)
increase done
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question_answer5)
Jack pushes a big cabinet with a force of 50 N. Under his force, the cabinet moves at a uniform speed. Jenny comes to help Jack. She begins to push the cabinet in the same direction with a force of 30 N.
After Jennys arrival, speed of the moving cabinet will
A)
increase done
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B)
decrease done
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C)
remain same done
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D)
become zero done
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question_answer6)
The force applied on an object will not lead to a change in
A)
the shape of the object done
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B)
the mass of the object done
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C)
its direction of motion done
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D)
its position done
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question_answer7)
Bob studies four situations involving various forces. These situations are
I | A satellite orbiting Earth________ |
II | A magnet attracting paper clips____ |
iii | A man hitting a cricket ball with a bat |
iv | A magnet repelling another magnet |
The situation in which motion is caused by the direct application of a force is
A)
I done
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B)
II done
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C)
III done
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D)
IV done
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question_answer8)
Which of the following forces is not a non-contact force?
A)
Magnetic done
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B)
Muscular done
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C)
Electrostatic done
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D)
Gravitational done
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question_answer9)
Four types of motion, which are caused by the action of direct and indirect forces, are described in the table.
I | Fluttering of a flag because of wind |
II | Falling of a ball on the ground___ |
III | Dropping of an apple from a tree |
IV | Falling of water from a bottle____ |
Which of the four types of motion is caused by the application of a direct force?
A)
I done
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B)
II done
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C)
III done
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D)
IV done
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question_answer10)
Earth revolves around Sun in 365 days. Earth and Sun are not in contact with each other. Earths revolution around Sun is caused by the
A)
shape of Sun done
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B)
shape of Earth done
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C)
force between Earth and Sun done
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D)
distance between Earth and Sun done
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question_answer11)
Gravitational force is ____i____force, while ___ii___ force is repulsive as well as attractive. The given statement is correctly completed by row
A)
i-an attractive; ii-frictional done
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B)
i-a repulsive, ii-magnetic done
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C)
i- an attractive; ii-Magnetic done
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D)
i-a repulsive; ii- frictional done
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question_answer12)
A wooden block slides down a rough inclined ramp, as shown in the given figure.
The wooden block experiences
A)
only frictional force done
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B)
only magnetic force done
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C)
gravitational and magnetic forces done
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D)
frictional and gravitational forces done
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question_answer13)
Jack is trying to climb a height with the help of a rope, as shown in the given figure.
Jack can climb the top by overcoming the
A)
tension of the rope done
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B)
friction of the rope done
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C)
magnetic force of Earth done
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D)
gravitational force of Earth done
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question_answer14)
A heavy stone falls
A)
faster than a light stone done
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B)
slower than a light stone done
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C)
with same acceleration as light stone done
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D)
none of these done
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question_answer15)
A stone is dropped from the roof of a building takes 4s to reach ground. The height of the building is
A)
19.6 m done
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B)
39.2 m done
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C)
156.8 m done
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D)
78.4 m done
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question_answer16)
The value of g at pole is
A)
greater than the value at the equator done
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B)
less than the value at the equator done
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C)
equal to the value of the equator done
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D)
none of these done
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question_answer17)
Two bodies A and B of mass 500 g and 200 g respectively are dropped near the earths surface. Let the acceleration of A and B be \[{{a}_{A}}\] and \[{{a}_{B}}\]respectively, then
A)
\[{{a}_{A}}={{a}_{B}}\] done
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B)
\[{{a}_{A}}>{{a}_{B}}\] done
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C)
\[{{a}_{A}}<{{a}_{B}}\] done
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D)
\[{{a}_{A}}\ne {{a}_{B}}\] done
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question_answer18)
A body is thrown up with a velocity of 20 m/s. The maximum height attained by it is approximately
A)
80 m done
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B)
60 m done
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C)
40 m done
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D)
20 m done
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question_answer19)
The weight of a body is 120 N on the earth. If it is taken to the moon, its weight will be about:
A)
120 N done
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B)
60 N done
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C)
20 N done
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D)
720 N done
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question_answer20)
A cube of edge 2 cm and mass 10 g is placed on the surface of a table. What is the pressure exerted by the cube on the table?
A)
\[0.098\text{ }N/{{m}^{2~}}\] done
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B)
\[0.196\text{ }N/{{m}^{2}}\] done
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C)
\[122.5\text{ }N/{{m}^{2~}}\] done
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D)
\[245\text{ }N/{{m}^{2}}\] done
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question_answer21)
Utpal takes four identical beakers (I, II, III, and IV) and makes a small hole in each of them at the same height from the base. He then fills water in. all the beakers. The water comes out from the holes and falls at distances \[{{d}_{1}},{{d}_{2}},{{d}_{3}}\]and \[{{d}_{4}}\] respectively from the base, where \[{{d}_{1}}<{{d}_{2}}<{{d}_{4}}<{{d}_{3}}\] The amount of water (V) filled in each beaker is related as
A)
\[{{V}_{1}}>{{V}_{2}}>{{V}_{3}}>{{V}_{4}}\] done
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B)
\[{{V}_{3}}>{{V}_{4}}>{{V}_{2}}>{{V}_{1}}\] done
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C)
\[{{V}_{1}}={{V}_{2}}={{V}_{3}}={{V}_{4}}\] done
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D)
\[{{V}_{3}}={{V}_{1}}<{{V}_{2}}={{V}_{4}}\] done
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question_answer22)
The number of air molecules in the atmosphere decreases with an increase in height and vice versa. This causes
A)
an increase in atmospheric pressure with an increase in height done
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B)
a decrease in atmospheric pressure with an increase in height done
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C)
an increase in wind speed with an increase in height done
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D)
a decrease in wind speed with an increase in height done
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question_answer23)
Romesh is climbing a mountain. While climbing, he continuously takes the reading of atmospheric pressure using a barometer. While climbing, Romesh will most probably observe that the height of the mercury column in the barometer
A)
keeps decreasing done
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B)
keeps increasing done
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C)
increases first and then decreases done
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D)
decreases first and then increases done
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question_answer24)
The given figure shows three plastic bottles interconnected through two pipes. Water is filled in each bottle to the same height. Bottle I is then closed in such a manner that no air is able to enter it.
If a stone is dropped in bottle III, then the water level will increase in
A)
bottle III only done
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B)
both bottles I and II done
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C)
both bottles II and III done
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D)
bottles I, II, and III equally done
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