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question_answer1)
In order to push or pull an object
A)
force must be applied done
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B)
speed must be applied done
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C)
friction must be applied done
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D)
electricity must be applied done
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question_answer2)
Roger noticed a book lying on a table. In order to move the book, he must apply a
A)
gear done
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B)
load done
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C)
force done
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D)
speed done
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question_answer3)
A bus is moving along a curved path, as shown in the given figure. During the motion of the bus, the direction of force on it:
A)
remains the same done
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B)
changes continuously done
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C)
is directed in the backward direction done
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D)
is directed in the downward direction done
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question_answer4)
A car moves with a constant speed toward East. A force is applied on the car to make it stop. The direction of the applied force is toward
A)
North done
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B)
South done
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C)
West done
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D)
East done
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question_answer5)
Four boys, Hunter, Jackson, Samuel, and Sean are pushing a heavy box. Their respective forces are listed below.
Boy | Force (N) |
Hunter | 25 |
Jackson | 25 |
Samuel | 30 |
Sean | 35 |
As a result of the presence of sand on the ground, the frictional force between the box and the ground is 15 N. The total force experienced by the box is
A)
100 N toward the left done
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B)
115N toward the left done
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C)
100 N toward the right done
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D)
115 N toward the right done
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question_answer6)
Eric and Evan are pulling a big load in opposite directions. Eric is applying a force of 20.56 N, while Evan is applying a force of 25.7 N on the load.
A)
4.15 N toward Evan done
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B)
5.14 N toward Evan done
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C)
4.15 N toward Eric done
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D)
5.14 N toward Eric done
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question_answer7)
A ball rolls at constant speed in a straight line along the ground. Jerry kicks the ball in the direction of its motion-As a result of Jerrys kick, speed of the ball 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_answer8)
When a wooden box is suspended by a spring balance, the spring stretches because
A)
Earths gravity pulls the box done
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B)
Earths magnetic field attracts the spring done
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C)
of the frictional force between the box and the spring done
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D)
of the electrostatic force between the box and the spring done
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question_answer9)
Joanna is playing carrom along with her friends. She strikes the striker with her index finger and pockets the queen. Joanna uses which force for pocketing the queen?
A)
Electric done
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B)
Magnetic done
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C)
Muscular done
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D)
Gravitational done
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question_answer10)
Two magnets are placed at a distance from each other on a frictionless surface, as shown in the given figure.
The magnets will experience
A)
only magnetic force done
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B)
only frictional force done
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C)
magnetic and frictional forces done
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D)
magnetic and gravitational forces done
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question_answer11)
A ball that is thrown up returns to the surface of Earth because of
A)
gravity done
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B)
friction done
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C)
electricity done
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D)
magnetism done
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question_answer12)
The direction of force on an upward moving ball is from
A)
up to down done
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B)
down to up done
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C)
left to right done
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D)
right to left done
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question_answer13)
The acceleration due to gravity is \[~9.8\text{ }m/{{s}^{2}}\]
A)
Much above the earths surface done
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B)
Near the earths surface done
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C)
Deep inside the earth done
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D)
At the centre of the earth done
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question_answer14)
A particle is taken to a height R above the earths surface, where R is the radius of the earth. The acceleration due to gravity there is
A)
\[2.45\text{ }m/{{s}^{2}}\] done
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B)
\[4.9\text{ }m/{{s}^{2}}\] done
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C)
\[9.8\text{ }m/{{s}^{2}}\] done
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D)
\[19.6\text{ }m/{{s}^{2}}\] done
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question_answer15)
When a body is thrown up, the force of gravity is
A)
in upward direction done
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B)
in downward direction done
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C)
zero done
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D)
in horizontal direction done
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question_answer16)
Mass of an object is
A)
amount of matter present in the object done
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B)
same as weight of an object done
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C)
measure of gravitational pull done
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D)
none of these done
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question_answer17)
The weight of an object is
A)
the quantity of matter it contains done
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B)
refers to its inertia done
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C)
same as its mass but is expressed in different units done
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D)
the force with which it is attracted towards the earth done
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question_answer18)
Weight of an object depends on
A)
temperature of the place done
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B)
atmosphere of the place done
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C)
mass of an object done
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D)
none of these done
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question_answer19)
The mass of body is measured to be 12 kg on the earth. Its mass on moon will be
A)
12 kg done
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B)
6 kg done
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C)
2 kg. done
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D)
72 kg done
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question_answer20)
Vishnu has two plastic bottles of different shapes. The two bottles are connected through a pipe, as shown in the given figure. Initially, both the bottles have water up to an equal level. One of the bottles has a tap. Vishnu opens the tap for some time such that the water level in bottle II decreases by one centimetre. The initial water level in each bottle is seven centimetres.
What is the new water level in bottle I?
A)
5.5 cm done
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B)
6.0 cm done
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C)
6.5 cm done
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D)
7.0 cm done
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question_answer21)
A tin container is shown in the given figure. There are four circular openings of equal diameter in the side wall of the container. The openings are labelled as I, II, III, and IV. These openings allow the water present in the container to come out through them. The water coming out through opening ___i___ will fall at the nearest distance from the container, while that coming out through opening ___ii___ will fall at the farthest distance from the container.
A)
\[i-I,ii-IV\] done
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B)
\[i-II,\text{ }ii-III\] done
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C)
\[i-III,ii-II\] done
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D)
\[i-III,ii-II\] done
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question_answer22)
Four actions: I When pressed, the water present in a rubbe dropper rises. II A nail is pushed into a wall. III A postcard remains attached to an inverts glass of water. IV When pressed, a rubber sucker gets attached to a wall. Which of the following actions is not caused by atmospheric pressure?
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_answer23)
The value of atmospheric pressure on the surface of earth at sea level is nearly Take density of mercury\[=\text{ }13600\text{ }kg/{{m}^{3}}\]; density of water \[=\text{ }1000\text{ }kg/{{m}^{3}}\]
A)
\[{{10}^{5}}\text{ }Pa\] done
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B)
\[{{10}^{3}}\text{ }Pa\] done
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C)
\[{{10}^{1}}\text{ }Pa\] done
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D)
\[{{10}^{4}}\text{ }Pa\] done
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question_answer24)
The liquid used in Barometer is:
A)
Mercury done
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B)
Kerosene done
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C)
Water done
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D)
Alcohol done
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question_answer25)
1 atm = __________ m Hg.
A)
0.76 done
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B)
76 done
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C)
760 done
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D)
7.6 done
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question_answer26)
Standard atmospheric pressure is :
A)
\[76\text{ }\times \text{ }13.6\text{ }\times \text{ }980\text{ }cm\] of mercury column done
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B)
\[76\text{ }dyne\text{ }c{{m}^{-2}}\] done
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C)
\[76\text{ }\times \text{ }13.6\text{ }cm\] of water column done
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D)
\[76\text{ }\times \text{ }980\text{ }dyne\text{ }c{{m}^{-2}}\] done
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question_answer27)
Atmospheric pressure is measured by :
A)
Thermometer done
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B)
Calorimeter done
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C)
Hydrometer done
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D)
Barometer done
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question_answer28)
The column of mercury in a barometer is 76 cm Hg. Calculate the atmospheric pressure if the density of mercury \[=13600\text{ }kg{{m}^{-3}}\]. (Take\[g\text{ }=\text{ }10\text{ }m{{s}^{-(}}B\]).
A)
\[1.03\text{ }\times \text{ }{{10}^{5\text{ }}}Pa\] done
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B)
\[1.03\,\times \text{ 1}{{0}^{3}}\text{ }Pa\] done
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C)
\[1.03\text{ }\times \text{ 1}{{0}^{4}}\text{ }Pa\] done
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D)
\[1.03\text{ }\times \text{ }{{10}^{6}}\text{ }Pa\] done
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question_answer29)
If the mercury in the barometer is replaced by water, what will be the resulting height of the water column? Density of water \[=1000\text{ }kg{{m}^{-3}}\]density of mercury \[=13600\text{ }kg{{m}^{-3}}\].
A)
0.76 m done
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B)
10 m done
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C)
10.3 m done
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D)
11 m done
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question_answer30)
If \[20c{{m}^{3}}\] gas at latm is expanded to \[50c{{m}^{3}}\] at constant T, then what is the fmal pressure?
A)
\[20\times \frac{1}{50}atm\] done
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B)
\[50\times \frac{1}{20}atm\] done
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C)
\[\frac{1}{20\times 50}atm\] done
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D)
None of these done
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