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question_answer1)
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Inertia is the property by virtue of which the body is unable to change by itself the state of rest only. Reason : The bodies do not change their state unless acted upon by an unbalanced external force.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer2)
Assertion : If the net external force on the body is zero, then its acceleration is zero. Reason : Acceleration does not depend on force.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer3)
Assertion : Newton?s second law of motion gives the measurement of force. Reason : According to Newton?s second law of motion, force is directly proportional to the rate of change of momentum.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer4)
Assertion : Force is required to move a body uniformly along a circle. Reason : When the motion is uniform, acceleration is zero.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer5)
Assertion : If two objects of different masses have same momentum, the lighter body possess greater velocity. Reason : For all bodies momentum always remains same.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer6)
Assertion : Aeroplanes always fly at low altitudes. Reason : According to Newton?s third law of motion, for every action there is an equal and opposite reaction.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer7)
Assertion : No force is required by the body to remain in any state. Reason : In uniform linear motion, acceleration has a finite value.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer8)
Assertion : Mass is a measure of inertia of the body in linear motion. Reason : Greater the mass, greater is the force required to change its state of rest or of uniform motion.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer9)
Assertion : The slope of momentum versus time curve give us the acceleration. Reason : Acceleration is given by the rate of change of momentum.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer10)
Assertion : A cyclist always bends inwards while negotiating a curve. Reason : By bending, cyclist lowers his centre of gravity.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer11)
Assertion : The work done in bringing a body down from the top to the base along a frictionless incline plane is the same as the work done in bringing it down the vertical side. Reason : The gravitational force on the body along the inclined plane is the same as that along the vertical side.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer12)
Assertion : Linear momentum of a body changes even when it is moving uniformly in a circle. Reason : Force required to move a body uniformly along a straight line is zero.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer13)
Assertion : A bullet is fired from a rifle. If the rifle recoils freely, the kinetic energy of rifle is more than that of the bullet. Reason : In the case of rifle bullet system the law of conservation of momentum violates.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer14)
Assertion : A rocket works on the principle of conservation of linear momentum. Reason : Whenever there is a change in momentum of one body, the same change occurs in the momentum of the second body of the same system but in the opposite direction.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer15)
Assertion : The apparent weight of a body in an elevator moving with some downward acceleration is less than the actual weight of body. Reason : The part of the weight is spent in producing downward acceleration, when body is in elevator.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer16)
Assertion : When the lift moves with uniform velocity the man in the lift will feel weightlessness. Reason : In downward accelerated motion of lift, apparent weight of a body decreases.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer17)
Assertion : In the case of free fall of the lift, the man will feel weightlessness. Reason : In free fall, acceleration of lift is equal to acceleration due to gravity.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer18)
Assertion : A player lowers his hands while catching a cricket ball and suffers less reaction force. Reason : The time of catch increases when cricketer lowers its hand while catching a ball.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer19)
Assertion : The acceleration produced by a force in the motion of a body depends only upon its mass. Reason : Larger is the mass of the body, lesser will be the acceleration produced.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer20)
Assertion : Linear momentum of a body changes even when it is moving uniformly in a circle. Reason : In uniform circular motion velocity remain constant.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer21)
Assertion : Newton?s third law of motion is applicable only when bodies are in motion. Reason : Newton?s third law applies to all types of forces, e.g. gravitational, electric or magnetic forces etc.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer22)
Assertion : A reference frame attached to earth is an inertial frame of reference. Reason : The reference frame which has zero acceleration is called a non-inertial frame of reference.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer23)
Assertion : A table cloth can be pulled from a table without dislodging the dishes. Reason : To every action there is an equal and opposite reaction.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer24)
Assertion : A body subjected to three concurrent forces cannot be in equilibrium. Reason : If large number of concurrent forces acting on the same point, then the point will be in equilibrium, if sum of all the forces is equal to zero.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer25)
Assertion : Impulse and momentum have different dimensions. Reason : From Newton?s second law of motion, impulse is equal to change in momentum.
A)
If both assertion and reason are true and the reason is the correct explanation of the assertion. done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of the assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If the assertion and reason both are false. done
clear
E)
If assertion is false but reason is true. done
clear
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