Class 9 Exam > Class 9 Questions > Direction: In the following questions, a sta...
Start Learning for Free
Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.
Reason : Kinetic energy depends on mass of the body.
- a)Both assertion and reason are true and reason is the correct explanation of assertion.
- b)Both assertion and reason are true but reason is not the correct explanation of assertion.
- c)Assertion is true but reason is false.
- d)Assertion is false but reason is true.
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Direction: In the following questions, a statement of assertion is fo...
Kinetic energy of a body of mass m1,
View all questions of this test
Again, kinetic energy of a body of mass m2,
If 
As given m2 > m1
Therefore, K1 > K2 i.e. the kinetic energy of light body will be more than the kinetic energy of heavy body when both have same momentum.
Most Upvoted Answer
Direction: In the following questions, a statement of assertion is fo...
Assertion : A light body and heavy body have same momentum. Then they also have the same kinetic energy.
Reason : Kinetic energy depends on the mass of the body.
To answer this question, let's understand the concepts of momentum and kinetic energy.
Momentum:
- Momentum is a property of a moving object and is defined as the product of its mass and velocity.
- Mathematically, momentum (p) can be expressed as p = m * v, where m is the mass of the object and v is its velocity.
- Momentum is a vector quantity, which means it has both magnitude and direction.
Kinetic Energy:
- Kinetic energy is the energy possessed by an object due to its motion.
- It depends on both the mass and the velocity of the object.
- Mathematically, kinetic energy (K.E.) can be expressed as K.E. = (1/2) * m * v^2, where m is the mass of the object and v is its velocity.
Now, let's analyze the given assertion and reason.
Assertion: A light body and heavy body have the same momentum. Then they also have the same kinetic energy.
Reason: Kinetic energy depends on the mass of the body.
From the given reason, we know that kinetic energy depends on the mass of the body. This means that if the mass of two objects is different, their kinetic energies will also be different.
However, the assertion states that a light body and a heavy body have the same momentum. Momentum depends on both mass and velocity. If the momentum of both objects is the same, it means that their masses and velocities are inversely proportional to each other. This implies that the light body will have a higher velocity compared to the heavy body.
Since kinetic energy depends on both mass and velocity, the light body will have a higher kinetic energy than the heavy body. Therefore, the assertion is false because two bodies with the same momentum do not necessarily have the same kinetic energy.
Hence, the correct answer is option 'D' - Assertion is false but the reason is true.
Reason : Kinetic energy depends on the mass of the body.
To answer this question, let's understand the concepts of momentum and kinetic energy.
Momentum:
- Momentum is a property of a moving object and is defined as the product of its mass and velocity.
- Mathematically, momentum (p) can be expressed as p = m * v, where m is the mass of the object and v is its velocity.
- Momentum is a vector quantity, which means it has both magnitude and direction.
Kinetic Energy:
- Kinetic energy is the energy possessed by an object due to its motion.
- It depends on both the mass and the velocity of the object.
- Mathematically, kinetic energy (K.E.) can be expressed as K.E. = (1/2) * m * v^2, where m is the mass of the object and v is its velocity.
Now, let's analyze the given assertion and reason.
Assertion: A light body and heavy body have the same momentum. Then they also have the same kinetic energy.
Reason: Kinetic energy depends on the mass of the body.
From the given reason, we know that kinetic energy depends on the mass of the body. This means that if the mass of two objects is different, their kinetic energies will also be different.
However, the assertion states that a light body and a heavy body have the same momentum. Momentum depends on both mass and velocity. If the momentum of both objects is the same, it means that their masses and velocities are inversely proportional to each other. This implies that the light body will have a higher velocity compared to the heavy body.
Since kinetic energy depends on both mass and velocity, the light body will have a higher kinetic energy than the heavy body. Therefore, the assertion is false because two bodies with the same momentum do not necessarily have the same kinetic energy.
Hence, the correct answer is option 'D' - Assertion is false but the reason is true.
|
Explore Courses for Class 9 exam
|
|
Top Courses for Class 9View all
Question Description
Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer?.
Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer?.
Solutions for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : A light body and heavy body have same momentum. Then they also have same kinetic energy.Reason : Kinetic energy depends on mass of the body.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 9 tests.
|
|
Explore Courses for Class 9 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup