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question_answer1)
Swimming is possible on account of [AFMC 1998, 2003]
A)
First law of motion done
clear
B)
Second law of motion done
clear
C)
Third law of motion done
clear
D)
Newton's law of gravitation done
clear
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question_answer2)
When we jump out of a boat standing in water it moves
A)
Forward done
clear
B)
Backward done
clear
C)
Sideways done
clear
D)
None of the above done
clear
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question_answer3)
You are on a frictionless horizontal plane. How can you get off if no horizontal force is exerted by pushing against the surface
A)
By jumping done
clear
B)
By spitting or sneezing done
clear
C)
By rolling your body on the surface done
clear
D)
By running on the plane done
clear
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question_answer4)
On a stationary sail-boat, air is blown at the sails from a fan attached to the boat. The boat will
A)
Remain stationary done
clear
B)
Spin around done
clear
C)
Move in a direction opposite to that in which air is blown done
clear
D)
Move in the direction in which the air is blown done
clear
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question_answer5)
A man is at rest in the middle of a pond on perfectly smooth ice. He can get himself to the shore by making use of Newton's [CPMT 1981]
A)
First law done
clear
B)
Second law done
clear
C)
Third law done
clear
D)
All the laws done
clear
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question_answer6)
A cannon after firing recoils due to [EAMCET 1980]
A)
Conservation of energy done
clear
B)
Backward thrust of gases produced done
clear
C)
Newton's third law of motion done
clear
D)
Newton's first law of motion done
clear
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question_answer7)
A body floats in a liquid contained in a beaker. If the whole system as shown in figure falls freely under gravity, then the upthrust on the body due to liquid is [Manipal MEE 1995]
A)
Zero done
clear
B)
Equal to the weight of liquid displaced done
clear
C)
Equal to the weight of the body in air done
clear
D)
None of these done
clear
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question_answer8)
Newton's third law of motion leads to the law of conservation of [Manipal MEE 1995]
A)
Angular momentum done
clear
B)
Energy done
clear
C)
Mass done
clear
D)
Momentum done
clear
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question_answer9)
A man is carrying a block of a certain substance (of density 1000 \[kg{{m}^{-3}}\]) weighing 1 kg in his left hand and a bucket filled with water and weighing 10 kg in his right hand. He drops the block into the bucket. How much load does he carry in his right hand now [Manipal MEE 1995]
A)
9 kg done
clear
B)
10 kg done
clear
C)
11 kg done
clear
D)
12 kg done
clear
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question_answer10)
A man is standing on a balance and his weight is measured. If he takes a step in the left side, then weight [AFMC 1996]
A)
Will decrease done
clear
B)
Will increase done
clear
C)
Remains same done
clear
D)
First decreases then increases done
clear
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question_answer11)
A man is standing at a spring platform. Reading of spring balance is 60 kg wt. If man jumps outside platform, then reading of spring balance [AFMC 1996; AIIMS 2000; Pb. PET 2000]
A)
First increases then decreases to zero done
clear
B)
Decreases done
clear
C)
Increases done
clear
D)
Remains same done
clear
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question_answer12)
A cold soft drink is kept on the balance. When the cap is open, then the weight [AFMC 1996]
A)
Increases done
clear
B)
Decreases done
clear
C)
First increases then decreases done
clear
D)
Remains same done
clear
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question_answer13)
Action and reaction forces act on
A)
The same body done
clear
B)
The different bodies done
clear
C)
The horizontal surface done
clear
D)
Nothing can be said done
clear
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question_answer14)
A bird is sitting in a large closed cage which is placed on a spring balance. It records a weight of 25 N. The bird (mass m = 0.5 kg) flies upward in the cage with an acceleration of \[2\,m/{{s}^{2}}\]. The spring balance will now record a weight of [MP PMT 1999]
A)
24 N done
clear
B)
25 N done
clear
C)
26 N done
clear
D)
27 N done
clear
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question_answer15)
A light spring balance hangs from the hook of the other light spring balance and a block of mass M kg hangs from the former one. Then the true statement about the scale reading is [AIEEE 2003]
A)
Both the scales read M/2 kg each done
clear
B)
Both the scales read M kg each done
clear
C)
The scale of the lower one reads M kg and of the upper one zero done
clear
D)
The reading of the two scales can be anything but the sum of the reading will be M kg done
clear
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question_answer16)
A machine gun fires 20 bullets per second into a target. Each bullet weighs 150 gms and has a speed of 800 m/sec. Find the force necessary to hold the gun in position [EAMCET 1994]
A)
800 N done
clear
B)
1000 N done
clear
C)
1200 N done
clear
D)
2400 N done
clear
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question_answer17)
The tension in the spring is [AMU (Engg.) 2001]
A)
Zero done
clear
B)
\[2.5\,N\] done
clear
C)
\[5\,N\] done
clear
D)
\[10\,N\] done
clear
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question_answer18)
A book is lying on the table. What is the angle between the action of the book on the table and the reaction of the table on the book [Kerala PMT 2005]
A)
\[0{}^\circ \] done
clear
B)
\[30{}^\circ \] done
clear
C)
\[45{}^\circ \] done
clear
D)
\[180{}^\circ \] done
clear
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question_answer19)
When a horse pulls a wagon, the force that causes the horse to move forward is the force [Pb. PET 2004]
A)
The ground exerts on it done
clear
B)
It exerts on the ground done
clear
C)
The wagon exerts on it done
clear
D)
It exerts on the wagon done
clear
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question_answer20)
A student attempts to pull himself up by tugging on his hair. He will not succeed [KCET 2005]
A)
As the force exerted is small done
clear
B)
The frictional force while gripping, is small. done
clear
C)
Newton's law of inertia is not applicable to living beings. done
clear
D)
As the force applied is internal to the system. done
clear
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question_answer21)
A man is standing at the centre of frictionless pond of ice. How can he get himself to the shore [J&K CET 2005]
A)
By throwing his shirt in vertically upward direction done
clear
B)
By spitting horizontally done
clear
C)
He will wait for the ice to melt in pond done
clear
D)
Unable to get at the shore done
clear
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question_answer22)
A body of mass 5kg is suspended by a spring balance on an inclined plane as shown in figure. The spring balance measure
A)
50 N done
clear
B)
25 N done
clear
C)
500 N done
clear
D)
10 N done
clear
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question_answer23)
A lift is going up. The total mass of the lift and the passenger is 1500 kg. The variation in the speed of the lift is as given in the graph. The tension in the rope pulling the lift at t = 11th sec will be
A)
17400 N done
clear
B)
14700 N done
clear
C)
12000 N done
clear
D)
Zero done
clear
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question_answer24)
In the above ques., the height to which the lift takes the passenger is
A)
3.6 meters done
clear
B)
8 meters done
clear
C)
1.8 meters done
clear
D)
36 meters done
clear
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